DSC LE4020 User manual

LE4020/LE4020CF v5.0
LTE Cellular Alarm Communicator
INSTALLATION MANUAL
Warning: This manual contains information on limitations regarding product use and function and information on the limitations as to liability of
the manufacturer. The entire manual should be carefully read.

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Contents
Section 1: Introduction 4
1.1 Features 4
1.1.1 Technical Specifications 4
1.2 Identification of Parts Model LE4020 7
1.3 Identification of Parts Model LE4020CF 8
Section 2: Installing the LE4020/LE4020CF 9
2.1 C24 Communications Enrollment 9
Section 3: Connecting the LE4020/LE4020CF 12
Section 4: Status LEDs 13
4.1 Operating Modes 13
4.1.1 Normal Mode 13
4.1.2 Service Mode 14
Section 5: Operating Principles 15
5.1 Simulated Landline Mode 15
5.2 Panel Transmission Monitoring (PTM) 15
5.3 Cellular Communications Sequence 15
5.4 Inputs 16
5.5 Outputs 16
5.5.1 Activating the Outputs 16
5.6 Reporting Codes 17
5.7 Swinger Shutdown 18
5.8 Hardware Default 18
5.9 Communicator Reset/Update 18
5.10 Low Power Radio Shutdown 19
5.11 SMS Command and Control 19
5.11.1 Arming/Disarming the Security Panel 19
5.11.2 Remote Control of PGM 20
5.12 Phone Number Call Direction 21
5.13 C24 Communications Remote Programming 21
Section 6: Troubleshooting Guide 22
6.1 Wiring Diagrams 25
LE4020/LE4020CF Installation Manual

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Safety Informaion
IMPORTANT
The equipment is fixed, wall-mounted and shall be installed in the position specified in these instructions (see
Figure 1: Parts). The equipment enclosure must be fully assembled and closed, with all the necessary
screws/tabs and secured to a wall before operation. Internal wiring must be routed in a manner that prevents:
- Excessive strain on wire and on terminal connections
- Loosening of terminal; connections
- Damage of conductor insulation
Never install this equipment during a lightning storm!
Instruct the end-user to:
- Not attempt to service this product. Opening or removing covers may expose the user to dangerous voltages
or other risks. Any servicing shall be referred to trained service persons only.
- Use authorized accessories only with this equipment.
Do not dispose of the battery in fire or water. Disposing of the battery in a fire will cause rupture and explo-
sion.
Do not dispose of the waste battery as unsorted municipal waste. Consult your local regulations and /or laws
regarding recycling with regard to this lead-acid battery. Doing so will help protect the environment. Some of
the materials that are found within the battery could become toxic if not disposed of properly and may affect
the environment.
This equipment, LE4020/LE4020CF, is fixed and shall be installed by Service Persons only (Service Person is
defined as a person having the appropriate technical training and experience necessary to be aware of hazards
to which that person may be exposed in performing a task, and of measures available to minimize the risks to
that person or other persons). It shall be installed and used within an environment that provides the pollution
degree max 2, over voltages category II, in non-hazardous, indoor locations only. This manual shall be used
with the Installation Manual of the relevant alarm control panel. All instructions specified within that manual
must be observed.
The performance of the LE4020/LE4020CF depends greatly on cellular network coverage. Therefore, it should
not be mounted without first performing placement tests to determine the best location for reception (minimum
of one green LED ON). Optional antenna kits – LTE-15ANT, LTE-25ANT, LTE-50ANT (15ft/4.6m, 25ft/7.6m
or 50ft/15.2m) – are available.

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Section 1: Introduction
This manual covers two communicator models, the LE4020 and the LE4020CF. They are referred to through-
out this manual as LE4020/LE4020CF unless otherwise indicated.
This LE4020/LE4020CF manages transmissions to a central station and can simulate the landline in the event
of trouble (e.g., landline down) or even substitute the landline completely in areas where the 3G/LTE or 2G
cellular service is provided and a landline is not available.
By connecting a to a control panel's standard PSTN interface, telephone-based Contact ID or SIA signals are
decoded and seamlessly routed through the LTE or 3G network to any of the compatible receiver options.
The LE4020/LE4020CF are wireless communicators for UL/ULC commercial fire and/or burglary applications.
Both models send alarm system information to a Sur-Gard System I-IP, II, III, IV or 5 receiver. The
LE4020/LE4020CF uses the LTE or 3G wireless network. The LE4020/LE4020CF can be used with UL/ULC
Listed compatible control units, as indicated in the manufacturer's installation instructions.
Note: These communicators are designed to work with the Contact ID communication format as described in
the SIA DC-05 standard and the SIA DC-03 standard for 300 baud. Before completing the field installation of
the alarm monitoring system please ensure communication with the supervising central station is successful by
sending several events and getting confirmation that they have been received.
1.1 Features
lDual-band UMTS/HSPA; Penta-Band LTE (LE4020/LE4020CF)
lAdvanced Carrier Selection
lBi-color Wireless Signal Strength Indicator
lLTE or 3G Internet communication with Sur-Gard SG-System I-IP / II / III / IV / 5
lCompatible with listed alarm control panels that have an integrated DACT and support a 4-digit or 10-
digit Contact ID communication format as described in SIA DC-05 Standard and the SIA DC-03 stand-
ard for 300 baud. Example of suitable compatible alarm panels:
DSC Models PC1864, PC1832, PC1616, PC4020. For LE4020/LE4020CF, the following alarm panels
are also compatible: HS2128, HS2064, HS2032, HS2016, HS3128, HS3032
lPanel Transmission Monitoring for up to four phone numbers
lSimulates landline
lSwitches automatically to the LTE or 3G cellular network in the event of landline trouble (e.g., line
down)
lFour Programmable (NO/NC/SEOL) Inputs
l12V 7Ah battery (optional, not included for model LE4020. Required for model LE4020CF)
lCase Tamper Input
lLandline overvoltage protection
lFour Programmable Outputs
lDLS support for status, firmware updates and remote debug enable
lRemote Firmware Upgrade
lRemote Diagnostics
lPanel Format Detection
lSMS Command and Control
Note: Feature not evaluated by UL/ULC
lPhone number call direction
lEasy enrollment with C24 Communications via web or mobile interface
1.1.1 Technical Specifications
The input voltage to the LE4020C can be drawn from the UL/ULC Listed control panel or provided by an
external UL/ULC Listed power supply rated for the application (external power-limited source).
LE4020/LE4020CF Installation Manual

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1.1.1 Technical Specifications
Note: The power supply must be Class 2, Power Limited. For residential applications a suitable power adaptor
is model DSC ADP1310(W)-NA.
Table 1-1 Ratings
Power Supply Ratings LE4020 LE4020CF
Input Voltage:
10 Vdc to 28 Vdc (use separately listed con-
trol panel or power supply) or use DSC
ADP1310/1320(W)-NA power adapter with
battery 12V/7Ah
120 Vac/60Hz
Current Consumption
Average Transmitter PWB Current: 140 mA* (with PSTNconnected)
155 mA* (without PSTNconnected)
PWBTransmission Current: 225 mA*
Rated Current:
500 mA using listed control panel or power
supply
700 mA using power adapter
0.3 A
* Plus any current drawn from the LE4020/LE4020CF AUX+ terminal (200 mA). Each of the four PGM outputs can be loaded up to 50 mA
(max)
Working Voltage Range
With Battery: Use the DSCADP1310/1320(W)-NA power
adapter Use internal PS4085 power supply module
Without Battery: 10 Vdc to 28 Vdc (external power supply N/A
Battery Type: sealed, rechargeable type, rated 12 V / 7 Ah (for 24 hr standby time plus 5 min alarm)
Battery charging voltage: 13.75 Vdc
Battery charge current limit: 360 mA 700 mA
NOTE: Battery must be replaced every 3 to 5 years.
NOTE: When using the battery, use DSC ADP1310(W)-NA power adapter.
Operating frequency - 3G (UMTS/HSPA): 850 MHz / 1900 MHz
For LE4020 operating frequencies, see Table 1.2.
Antenna gain: 2.0 dBi
Environmental Specifications
Operating temperature: 0°C-49°C (32°F-120°F)
Humidity: 93%RH Maximum (non-condensing)
Mechanical Specifications
White cabinet dimensions: 257.2 mm x 161.9 mm x 76.6 mm / 10.125” x 6.375” x 3.0”
Weight (without battery): 1.28 kg / 2.8 lb
Red cabinet dimensions: 295.3 mm x 258.4 mm x 77.0 mm / 11.625” x 10.175” x 3.03”
Weight (without battery): 2.52 kg / 5.5 lb
Simulated Telco Loop specifications (TIP/RING)
On-Hook Voltage: 12 Vdc
Off-Hook Voltage (Maximum): 35 Vdc
Loop Current: 25 mA
Loop Resistance: 600 Ohms

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Table 1-2 LE4020 Operating Frequencies
Band Transmission Band (Tx) Receive Band (Rx)
LTE B2 1850 - 1910 MHz 1930 - 1990 MHz
LTE B4 1710 - 1755 MHz 2110 - 2155 MHz
LTE B5 824 - 849 MHz 869 - 894 MHz
LTE B12 698 - 716 MHz 728 - 746 MHz
LTE B13 777 - 787 MHz 746 - 756 MHz
UMTS B2 1850 - 1910 MHz 1930 - 1990 MHz
UMTS B5 824 - 840 MHz 869 - 894 MHz
LE4020/LE4020CF Installation Manual

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1.2 Identification of Parts Model LE4020
1.2 Identification of Parts Model LE4020
2 3 4 5 6
1
4
3
7
8
9
10
11
12
Part Part
1 3G/LTE antenna 7 Battery connector
2 Metal enclosure 8 Tamper switch
3 Status LEDs 9 Terminal blocks
4 Anchor screw holes 10 12 V / 7Ah battery (not included)
5 SIM card holder 11 Earth ground connection
6 3G/LTE radio module 12 PC link connector

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1.3 Identification of Parts Model LE4020CF
2 3 4
5
6
1
5
3
7
12
11
10
9
5
13
EGND
Part Part
1 Antenna 8 12 V/7 Ah battery
2 Metal enclosure 9 Earth ground connection
3 Status LEDs 10 Cabele entry
4 SIMcard holder 11 Terminal blocks
5 Anchor screw holes 12 Tamper switch
6 3G/LTE radio module 13 PC link header
7 Battery leads
All circuits are classified for UL installations as Power Limited/Class II Power Limited except for the battery
leads and AC input for model LE4020CF which are not power limited. Do not route any wiring over circuit
boards. Maintain at least 1” (25.4mm) separation. A minimum 1/4” (6.4mm) of separation must be maintained
at all points between Power Limited wiring and all other non-Power Limited wiring. Route wires as indicated
above.
For ULC Commercial Fire Monitoring Installations, connections between the fire alarm control panel input-
s/outputs (telephone interface Tip/Ring or output relay contacts) and LE4020/LE4020CF inputs/outputs
(T1/R1, Z1-Z4, PGM1-4) shall be run in metallic conduit within 18m(ULC) and in the same room.
For ULcommercial fire applications, restricted to same room, max. 20 ft in conduit.
LE4020/LE4020CF Installation Manual

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Section 2: Installing the LE4020/LE4020CF
Section 2: Installing the LE4020/LE4020CF
2.1 C24 Communications Enrollment
The LE4020/LE4020CF requires enrollment with C24 Communications to operate. For more information,
please visit www.connect24.com, contact C24 Communications customer service at 1-888-251-7458 (US) / 1-
888-955-5583 (Canada) or contact the central station to inquire if they are a C24 Communications Master
Reseller.
Note: Enrollment with C24 Communications should be performed before turning on the LE4020/LE4020CF
unit.
Before inserting or removing the SIM card, please ensure the unit is turned off.
Step 1 - Initialize the LE4020/LE4020CF with C24 Communications
The LE4020/LE4020CF can be initialized with C24 Communications by:
web - www.connect24.com
mobile - m.connect24.com
To complete enrollment, a C24 profile, installer ID/PIN (or web credentials) and the 20-digit SIM number are
required.
Note: The SIM activation process with the cellular carrier typically takes between five and ten minutes to com-
plete.
Step 1 - Determine the Best Signal Location
1. Detach the front cover by removing the four screws.
2. Apply power (DC and/or battery). The LE4020/LE4020CF is now in Placement Test mode.
Step 2 - Determine Best Signal Location
1. Remove the screws and the front cover of the LE4020/LE4020CF metal enclosure [1].
2. Fit the antenna [2] (ensure that the bolt [3] is fastened tightly).
3. Connect the antenna to the 3G Radio [5] and ensure the connector is secure.
Note: Before inserting or removing the SIM card, please ensure the unit is powered down.
4. Ensure the SIM card is placed in its socket [6].
5. Power up the LE4020/LE4020CF module [4]Use a DC power source rated 12V/0.7A connected to +/-
12V terminals [9]
Step 2a – SIM Card Is Activated.
The red LED is on solid, the blue LED is off and the signal strength LEDs display the average signal strength.
In this state, the LE4020/LE4020CF is registered to the network.
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
ON OFF - -
If the signal strength is too low (bottom signal LED off or flashing), the LE4020/LE4020CF will proceed to
Step 3: scan for, and attach to, carriers with sufficient signal strength. If the LE4020/LE4020CF is connected to
a carrier with sufficient signal strength (minimum of bottom signal strength LED on solid), it proceeds to Step
4.
Step 2b – SIM Card Is Not Activated
The red LED flashes, the blue LED is off and the signal strength LEDs display the average signal strength.

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Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
FLASHING OFF - -
In this state, the LE4020/LE4020CF is unable to register to the network because it is inactive. The signal
strength indicated is from any nearby cell tower (including cellular towers belonging to non-roaming partners)
and does not necessarily reflect the signal strength of the intended network. The LE4020/LE4020CF remains
in this state until the SIM is activated. Once the SIM is activated, the LE4020/LE4020CF proceeds to Step 2a.
Step 3 – Carrier Scanning Due To Insufficient Signal Strength
The LE4020/LE4020CF scans the surrounding network and connects to the carrier to provide a signal strength
of at least 7 CSQ. While this action is being performed, all four LEDs activate to show a scanning sequence in
progress. The LEDs cycle from top to bottom and then bottom to top until the LE4020/LE4020CF connectes
to a carrier with a signal strength above 7 CSQ (minimum of bottom signal strength LED on solid).
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
FLASH ON OFF OFF OFF
OFF FLASH ON OFF OFF
OFF OFF FLASH ON OFF
OFF OFF OFF FLASH ON
OFF OFF FLASH ON OFF
OFF FLASH ON OFF OFF
FLASH ON OFF OFF OFF
Once this is completed, the LE4020/LE4020CF proceeds to Step 4.
Step 4 - Acquire C24 Communications Programming
The red LED is on solid and the blue LED flashes. The flashing blue LED indicates that the
LE4020/LE4020CF has requested programming from C24 Communications and is waiting for a response.
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
ON FLASHING - -
Once remote programming is completed, the blue LED switches to solid and the LE4020/LE4020CF proceeds
to Step 5.
Step 5 – Receiver Initialization
The red and blue LED’s are both on solid and the signal strength LEDs are off.
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
ON ON OFF OFF
When the LE4020/LE4020CF sends a request to communicate with the central station, the top signal strength
LED begins flashing.
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2.1 C24 Communications Enrollment
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
ON ON FLASHING OFF
When the central station communicates back to the LE4020/LE4020CF, the top signal strength LED turns on
solid.
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
ON ON ON OFF
When the LE4020/LE4020CF sends a request to communicate to the next central station, the bottom signal
strength LED begins flashing...
Red Blue Blue/Green
(Top)
Blue/Green
(Bottom)
ON ON ON FLASHING
...and turns on solid when it receives a communication back from the central station.
Red Blue Yellow/Green
(Top)
Yellow/Green
(Bottom)
ON ON ON ON
If at least one of the central stations does not respond back to the communicator, the signal strength LED cor-
responding to that central station turns off. Once the initialization sequence is complete, the
LE4020/LE4020CF switches to steady state operation.
Step 6 - Mount the LE4020/LE4020CF
1. Power down the LE4020/LE4020CF by removing the DC power source and battery leads.
2. Using the cabinet, mark the four screw locations. Drill the anchor screw holes.
Note: Check for cable conduits and water pipes before drilling.
3. Using anchor screws (not provided), mount the cabinet to the wall.
4. Run the cables through the cable entry [13] or through the cabinet knockouts.
5. Complete the connections on the terminal blocks [11].
Note: Ensure that power and Telco circuit connections are made only after the cabinet has been secured to the
building or structure, and has been connected to the protective earth ground. Descriptions of the terminals can
be found in the ‘Connecting the LE4020/LE4020CF’ section.
6. Reattach the front cover [1] securely to the cabinet.
Note: Please refer to the end of this manual for wiring diagrams.

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Section 3: Connecting the LE4020/LE4020CF
(1) Earth Ground - This terminal must be connected to the Mains Earth, in order to comply with the Tele-
communications Network Safety Standards (Overvoltage Protection Requirements).
TIP (2) / RNG (3) External Telephone Line - These terminals must be connected directly to the incoming tele-
phone line.
T1 (4) / R1 (5) Internal Telephone Line - These terminals must be connected to the TIP and RING of the con-
trol panel.
COM (6,12) Common - This terminal is connected internally to Power Ground.
PGM1 (7), PGM2 (8), PGM3 (9), PGM4 (10) Programmable Open-collector Outputs - These outputs can be
activated by programmed events. Refer to ‘Activating the Outputs’ for details. The maximum current sink of
each output must not exceed 50mA.
AUX+ (11) Auxiliary Output - 9 to 14VDC Special Application Output, (200 mA max for LE4020 and 100
mA max for LE4020CF).
Note: Electrical current drawn from this terminal is drawn directly from the power supply. This must be added
to the LE4020/LE4020CF current when determining the total draw on the host panel or power supply.
Z1-Z4 (13-14-15-16) Programmable Inputs - These terminals can be set up to trigger events. Refer to ‘Inputs’
for details.
DC IN (17), (18) Device Power Supply - These terminals must be connected to a rated power supply.
For model LE4020, if the primary power supply does not include a backup battery, connect the battery leads
(red and black wires, item [10] in Section 1.2) to a 12 V / 7 Ah battery. For model LE4020CF, connect these
terminals to the internal power supply module PS4085.
LE4020/LE4020CF Installation Manual

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Section 4: Status LEDs
Section 4: Status LEDs
4.1 Operating Modes
The LE4020/LE4020CF features two distinct operating modes: Normal Mode and Service Mode. The unit is in
Normal Mode when the cover is on (tamper is in a restored state). The unit is in Service Mode when the cover
is off (a cover tamper is present).
4.1.1 Normal Mode
The LE4020/LE4020CF has four status LEDs. The following table describes the status LEDs when the com-
municator is in normal operating mode.
Red
This LED indicates trouble conditions.
On (solid): Trouble Requiring Service
1 Flash: Wireless Network Trouble
2 Flashes: Battery Trouble
3 Flashes: Input Power Trouble
Blue This LED indicates cellular radio activity. When on (solid), a phone line trouble condition exists. This LED turns on
when the interface switches to the wireless network (due to a landline trouble condition). This LED also flashes once
when the LE4020/LE4020CF transmits a signal and twice when it receives a kiss-off from the central station.
Note: If the LE4020/LE4020CF is programmed to be the primary communicator, the blue LED remains off, but still
flashes during the signal transmission as described above.
Blue/Green
(Top) This LED indicates signal strength and network technology. If the LE4020/LE4020CF is operating on LTE, the LED is
BLUE. If the LE4020/LE4020CF is operating on 3G channel, the LED is GREEN. When this LED is On, the reception
is optimal. This LED switches On only when the bottom LED is on.
Blue/Green
(Bottom)
This LED indicates signal strength and network technology. If the LE4020/LE4020CF is operating on LTE, the LED is
BLUE. If the LE4020/LE4020CF is operating on 3G channel, the LED is GREEN.
If this LED is Off and the Red LED is On, the Wireless Network service is unavailable (NO SERVICE). This LED
flashes when the Wireless Network reception is poor. If this LED is on, the LE4020/LE4020CF is able to communicate
with the 3G (HSPA) or 2G (GPRS) or LTE network.

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4.1.2 Service Mode
To view detailed trouble information on the status LEDs, the LE4020/LE4020CF must be placed in Service
Mode by removing the front cover. When in Service Mode, the status LEDs indicate the trouble condition as
follows.
Number of Flashes Trouble Type
RED BLUE
1 OFF Wireless network trouble - unable to connect to cellular network
2 OFF Battery trouble - battery with low voltage output
3 OFF Input power trouble
1 Flashing Insufficient signal strength - poor location
2 Flashing C24 suppressed trouble
3 Flashing C24 communication configuration trouble
1 ON Radio/SIM trouble - radio or SIM unresponsive
2 ON Receiver not available trouble
3 ON Supervision trouble
4 ON Cover tamper is open
OFF - No trouble
LE4020/LE4020CF Installation Manual

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Section 5: Operating Principles
Section 5: Operating Principles
5.1 Simulated Landline Mode
The simulated landline provides the alarm control panel (with dialer interface) with a backup line in the event
of PSTN line trouble.
Note: The LE4020/LE4020CF must be programmed as a backup communicator for Simulated Landline mode
to operate.
If the voltage on the landline terminals (TIP/RNG) drops below 2.8V for a period of between 10 and 45
seconds - depending on the alarm control panel connected to the T1/R1 terminals- the LE4020/LE4020CF
switches the connected telephone device to the cellular network. After waiting between 30 and 40 seconds, it
checks the landline for one of the following:
lIf the landline has been restored, the LE4020/LE4020CF switches the connected device back to the
landline, OR
lIf the landline is still down, the LE4020/LE4020CF continues the simulation until the landline is
restored. The LE4020/LE4020CF will not switch during ongoing calls.
Note: When the landline is down, the LE4020/LE4020CF provides a dial tone to any device connected to T1
and R1, including any telephones on the premises. The phones on the premises are not, however, able to dial
out over the LE4020/LE4020CF.
5.2 Panel Transmission Monitoring (PTM)
The LE4020/LE4020CF can also monitor the panel’s attempt to communicate with the central station. If it
determines that the panel is having difficulty, it switches the line to the cellular network. This feature is only
active when the LE4020/LE4020CF is configured as a backup communicator. This feature is in addition to the
regular line voltage detection.
The LE4020/LE4020CF monitors the phone line for four consecutive failed attempts within a 12-minute win-
dow. A failed attempt is assumed to have occurred when a line seizure takes place during dialing (either the
alarm panel or the customer telephone), but no 1400Hz tone (Contact ID kiss-off) or 2025Hz tone (SIA kiss-
off) is sent from the receiver.
Once the conditions for a failed attempt are met, the LE4020/LE4020CF connects the panel to the cellular net-
work to communicate the events. When the LE4020/LE4020CF switches the line it stays in this mode until
the panel hangs up. On the next event the LE4020/LE4020CF restarts the error detection sequence before
switching.
The LE4020/LE4020CF performs this sequence on any phone number that is detected on the line. Specific
central station phone numbers can be programmed into the LE4020/LE4020CF if desired. Up to four, 20-digit
numbers can be added to your profile at Connect 24. If programmed, the LE4020/LE4020CF only looks for a
Contact ID or SIA kiss-off after these numbers are dialed. A Telephone Line Monitoring trouble (PGM output
activation and/or reporting code if applicable) is also activated and/or transmitted when the PTM is activated.
A restoral is sent at the end of the call.
5.3 Cellular Communications Sequence
When an alarm is triggered:
lThe control panel goes off-hook.
lThe LE4020/LE4020CF asserts a dial tone.
lThe control panel dials the number of the central station. Ensure that the alarm panel inserts a minimum
one second pause, or has Dial Tone Search enabled before dialing the number.
lThe LE4020/LE4020CF detects the DTMF dialing and stops dial tone.
Note: The LE4020/LE4020CF is unable to decode pulse dialing.

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If the panel is programmed for Contact ID format:
lThe LE4020/LE4020CF sends the required Contact ID dual-tone handshake to the panel.
lAfter receiving the handshake, the control panel transmits an alarm message in Contact ID format.
lThe LE4020/LE4020CF decodes and transforms the Contact ID digits into an IP packet and sends it to
the central station receiver over the cellular network.
lThe central station receiver acknowledges the alarm and sends a command to the LE4020/LE4020CF to
generate the corresponding 1400Hz Kiss-off signal for a minimum of 800 milliseconds.
After the LE4020/LE4020CF generates a Kiss-off signal, it sends the next alarm or, if no further alarms need to
be sent, the control panel goes on-hook.
If the panel is programmed for SIA (300 baud) format:
lThe LE4020/LE4020CF sends the required SIA handshake to the panel.
lAfter receiving the handshake, the control panel transmits an alarm message in the SIA format.
lThe LE4020/LE4020CF decodes and transforms the SIA events into an IP packet that it sends to the
central station receiver over the cellular network.
lThe central station’s receiver acknowledges the alarm and sends a command to the LE4020/LE4020CF
to generate the corresponding 2025Hz kiss-off signal for a minimum of one second.
lAfter the LE4020/LE4020CF generates a kiss-off signal, it sends the next alarm or, if no further alarms
need to be sent, the control panel goes on hook.
Note: The LE4020/LE4020CF automatically adjusts the order of the handshakes based on the last format the
control panel used to transmit an event.
5.4 Inputs
The LE4020/LE4020CF has four inputs that can be used to trigger specific communications. These events trans-
mit using the Contact ID or SIA format with Inputs 1-4 reporting as [991] to [994] respectively.
Default settings are:
INPUT 1- FIRE INPUT 3 - BURGLARY
INPUT 2 - PANIC ALARM INPUT 4 - SYSTEM TROUBLE
Inputs can be configured as follows:
Normally Open - input activates when a short condition is detected between the terminal and COM
Normally Closed - input activates when an open condition is detected between the terminal and COM
Single End of Line - input activates when a short or open condition is detected between the terminal and
COM and restores when a 5.6Kohm resistor is detected between the terminal and COM.
Note: These inputs are programmable to communicate using either the Contact ID or SIA format.
Note: For UL/ULC installations, connections between alarm panel outputs and LE4020/LE4020CF inputs
must be run in protective metallic conduits. To reduce interference with the antenna, do not connect metal con-
duit to the knock-outs in the top of the cabinet.
5.5 Outputs
The LE4020/LE4020CF has four programmable outputs to activate in response to the associated events. Refer
to the LE4020/LE4020CF Wiring Diagram at the back of this manual.
5.5.1 Activating the Outputs
The LE4020/LE4020CF has four open collector outputs capable of a maximum of 50mA. Internal events on
the LE4020/LE4020CF can trigger the outputs to turn on an LED or activate an input on the host panel. The
default settings are as follows.
OUTPUT 1: Landline Trouble - Output is normally high and switchs to ground when the telephone line is
down.
LE4020/LE4020CF Installation Manual

17
5.6 Reporting Codes
OUTPUT 2: Cellular Module or Network Trouble - Output is normally high and switches to ground when
the LE4020/LE4020CF cannot communicate with the network.
OUTPUT 3: Power Supply or Battery Trouble - Output is normally high and switches to ground when a
problem with the power source is detected.
OUTPUT 4: General Module Trouble - Output is normally low and switches to high when a Cellular Net-
work Trouble, Power Supply/Battery Trouble, and/or a Failure to Communicate (FTC) trouble is detected.
Note: PGM4 must be connected to the control panel as shown in Figure 4 (Residential applications) or Figures
8-9 (Commercial applications). Program the control panel input Zone/Point as 24hr ‘Supervisory’ with keypad-
only notification when activated. Output 4 on the LE4020/LE4020CF must be set as ‘Active High’.
Note: Once an output has been activated automatically, it will not restore until all the causes of activation are
cleared.
5.6 Reporting Codes
LE4020/LE4020CF Reporting Codes CID SIA Programmable Comments
Zone 1 Activation E11A 991 FA 991 YES Delayed 24 Hour Fire *
Zone 1 Restoral R11A 991 FH 991 YES Delayed 24 Hour Fire Restore *
Zone 2 Activation E12A 992 PA 992 YES Panic Alarm *
Zone 2 Restoral R12A 992 PH 992 YES Panic Alarm Restore*
Zone 3 Activation E13A 993 BA 993 YES Burglary *
Zone 3 Restoral R13A 993 BH 993 YES Burglary Restore *
Zone 4 Activation E3AA 994 YX 994 YES System Trouble *
Zone 4 Restoral R3AA 994 YZ 994 YES System Trouble Restore *
PSTN Line Down E351 000 LT 000 FIXED Telco 1 Fault
PSTN Line Restoral R351 000 LR 000 FIXED Telco 1 Fault Restore
Input Loss E337 000 YP 000 FIXED Power Supply Trouble
Input Restoral R337 000 YQ 000 FIXED Power Supply Trouble Restore
Low Battery Alert E338 000 YT 000 FIXED Transmitter Battery Trouble
Low Battery Restoral R338 000 YR 000 FIXED Transmitter Battery Restore
Periodic Test E603 XXX RP XXX FIXED Test Transmission <Receiver Path>
Periodic Test with Trouble E608 XXX RY XXX FIXED Test Transmission <Receiver Path>
Radio Activation R552 000 RS 000 FIXED Remote Programming Successful
Internal Buffer Full E624 000 JL 000 FIXED
FTC Restoral R354 000 YK 000 FIXED Communications Restored
Firmware Update Successful R901 000 LS 000 FIXED
Firmware Update Fail E902 000 LU 000 FIXED
Firmware Update Begin E901 000 LB 000 FIXED
System Tamper E145 000 ES 000 FIXED Expansion Module Tamper
System Tamper Restore R145 000 EJ 000 FIXED Expansion Module Tamper Restore
* C24 Communications default value

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LE4020/LE4020CF Reporting Codes CID SIA Programmable Comments
Zone 1 Activation E301 991 AT 991 YES AC Loss*
Zone 1 Restoral R301 991 AR 991 YES AC Loss Restore *
Zone 2 Activation E200 992 FS 992 YES Fire Supervisory*
Zone 2 Restoral R200 992 FV 992 YES Fire Supervisory Restore*
Zone 3 Activation E110 993 FA 993 YES Fire *
Zone 3 Restoral R110 993 FH 993 YES Fire Restore *
Zone 4 Activation E300 994 YX 994 YES System Trouble *
Zone 4 Restoral R300 994 YZ 994 YES System Trouble Restore *
PSTN Line Down E351 000 LT 000 FIXED Telco 1 Fault
PSTN Line Restoral R351 000 LR 000 FIXED Telco 1 Fault Restore
Periodic Test E603 XXX RP XXX FIXED Test Transmission <Receiver Path>
Periodic Test with Trouble E608 XXX RY XXX FIXED Test Transmission <Receiver Path>
Radio Activation R552 000 RS 000 FIXED Remote Programming Successful
Internal Buffer Full E624 000 JL 000 FIXED
FTC Restoral R354 000 YK 000 FIXED Communications Restored
Firmware Update Successful R901 000 LS 000 FIXED
Firmware Update Fail E902 000 LU 000 FIXED
Firmware Update Begin E901 000 LB 000 FIXED
System Tamper E145 000 ES 000 FIXED Expansion Module Tamper
System Tamper Restore R145 000 EJ 000 FIXED Expansion Module Tamper Restore
5.7 Swinger Shutdown
To prevent "runaway" signals to the central station, the LE4020/LE4020CF is equipped with Swinger Shut-
down which limits certain trouble events to a maximum of four reports every 24 hours. The condition restores
and the counter resets at midnight. Swinger Shutdown applies to the following trouble conditions:
lSystem Tamper/Restore
lLow Battery Trouble/Restore
lTLM Trouble/Restore
lInput Power Trouble/Restore
lFTC Restore
lZone inputs
5.8 Hardware Default
A hardware default updates the unit with the latest configuration from C24 Communications if:
lThe device was originally programmed incorrectly.
lThe unit was installed at a different location and then relocated to a new site.
lA SIM card is being swapped.
To perform a hardware default, follow these steps:
1. Power down the unit (remove primary DC power and remove the backup battery) and remove all con-
nections to Zone1, Zone 2, PGM1 and PGM.
2. Connect a wire between Z2 (terminal 14) and PGM2 (terminal 8)or Z1 (terminal 13) and PGM1 (ter-
minal 7).
3. Power up the radio by connecting the battery (if present) first and then primary DC power.
4. Wait for 20 seconds and then completely power down the unit.
5. Disconnect the wire between the Zone and PGM terminals.
Note: Failure to perform hardware default will result in the unit transmitting with the previously programmed
configuration.
5.9 Communicator Reset/Update
Note: For UL864 Installations, installer will need to be on site.
The firmware of the device can be updated over Cellular or PC-Link:
lWhen the firmware update begins, all LED are ON.
LE4020/LE4020CF Installation Manual

19
5.10 Low Power Radio Shutdown
RED BLUE
Blue/Green
(Top)
Blue/Green
(Bottom)
ON ON ON ON
lDuring the firmware update process the LEDs are cycled individually in a chaser pattern. (different from
the Advanced Carrier Selection pattern).
RED BLUE Blue/Green
(Top)
Blue/Green
(Bottom)
FLASH ON OFF OFF OFF
OFF FLASH ON OFF OFF
OFF OFF FLASH ON OFF
OFF OFF OFF FLASH ON
FLASH ON OFF OFF OFF
OFF FLASH ON OFF OFF
OFF OFF FLASH ON OFF
OFF OFF OFF FLASH ON
lAfter a successful update, the unit automatically restarts.
Note: Several resets take place during a single Firmware update session.
Note: The unit re-requests programming after a firmware update; the version number is updated and viewable
via C24 Communications.
Note: Unit must not be powered down during a Firmware update.
Note: Unit does not process remote firmware update requests if any of the following troubles is present. If the
trouble occurs after the unit has processed the firmware update request, the firmware update is not interrupted.
• Input Power Trouble
• Low Battery Trouble
5.10 Low Power Radio Shutdown
When the battery voltage reaches the low battery threshold of 10.5V, the unit turns off the radio to prevent
unnecessary network registrations. In this state, the unit does not communicate any events.
Radio shutdown is indicated by the LEDs as follows:
lRed LED indicates low battery trouble.
lTwo RSSI LEDs blinking on/off together indicates the radio is not ready.
This LED sequence is displayed until the low battery voltage is restored and the radio is enabled again.
5.11 SMS Command and Control
Note: This feature is not UL/ULCevaluated.
The user can remotely arm/disarm their security panel and control PGM outputs via SMS commands.
5.11.1 Arming/Disarming the Security Panel
1. Program a PGM output to Remote Arming in C24 Communications.
2. Ensure this PGM output is connected to a relay to the security panel zone.

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3. Set up the zone on the security panel as momentary or maintained arming.
lIf the security panel uses momentary key switching, configure the communicator PGM with a
time field of 05. In this configuration, both arm and disarm generate the pulse.
lIf the security Panel uses maintained key arming, configure the communicator PGM with a time
field of 00.
4. Optionally, the panel arm state can be configured for the communicator to detect by setting a panel
PGM output to reflect panel arm state and having a relay connected to a communicator zone configured
to follow panel arm state.
5.11.2 Remote Control of PGM
1. Set up one or more PGM outputs to Remote Control PGM configuration. A PGM can be latched or
timed:
lsetting the PGM timer to 00 causes it to be latched. The PGM will not turn off unless the turn
off command is received.
lsetting the PGM timer to a value between 1 and 255 seconds causes it to be timed. The PGM
activates for the programmed duration.
2. Via C24 Communications, program the phone number and access code used for SMS command and con-
trol.
lUp to 6 different phone numbers can be programmed to perform SMS command and control.
lThe password can be 4 to 8 alphanumeric characters and is not case sensitive.
The SMS command and control can be sent in the following format:
For arming/disarming the Security Panel
Arm <access code>, example Arm 12345678
For activating/deactivating a specific PGM
Activate <PGM #> <access code>, Activate 1 12345678
The following SMS command and control operations are available:
Arming
Language Command Label (must not be case sensitive)
English Arm
French Armement
Spanish Armado
Disarming
Language Command Label (must not be case sensitive)
English Disarm
French Desarmement
Spanish Desarmado
Activate PGM
Language Command Label (must not be case sensitive)
English Activate
French Activation
Spanish Activar
LE4020/LE4020CF Installation Manual