RHOMBUS DC20 User manual

DC20 Door Controller
User Manual
Revision A 230920

3
DC20 User Manual
Contents
System Overview 05
Mounting Instructions 06
Recommended Wiring 07
Troubleshooting 14
Registration 15
Specications
Appendix
Notes
15
16
18

4DC20 User Manual
Service and installation should only be performed by trained personnel.
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own expense.
This device complies with Industry Canada’s license-exempt RSSs. Operation is subject to the
following two conditions:
1. This device may not cause interference; and
2. This device must accept any interference, including interference that may cause undesired
operation of the device.
The device has been evaluated to meet general RF exposure requirement. The device can be used
in portable exposure condition without restriction.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio
exempts de licence. L’exploitation est autorisée aux deux conditions suivantes:
1. L’appareil ne doit pas produire de brouillage, et
2. l’utiliateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d’en compromettre le fonctionnement
L’appareil a été évalué pour répondre aux exigences générales en matière d’exposition aux RF.
L’appareil peut être utilisé en condition d’exposition portable sans restriction.
WARNING messages will be fully boxed as shown here. Failing to follow instruction may result
in damage to the DC20 or other connected components.
Date
9/20/2023 A Initial Release
Revision Notes
FCC Compliance Statement
IC Compliance Statement

5
DC20 User Manual
DC20 Overview
Tools Required
• Flathead 1/8” screwdriver
• Phillips #2 screwdriver
• Pen or pencil for marking drill locations
Included in the box
• DC20 Door controller
• Power adapter and AC cord
• Battery cable
• (4) Relay jumper wires
• (5) #8 wall screws and anchors
• (16) 4.7KΩ resistors[MR1] [ME2] [NM3]
• (2) Keys
The DC20 is a 4-Door Access Controller that is cloud-managed, secure by default, and built for
enterprise scalability. The DC20 pairs seamlessly with Rhombus Access Control devices and existing
door hardware.
Main Components
• Power drill and 1/4” drill bit for wall anchors
or 1/8” drill bit for screw pilot
x5
x5
x4
x16
x2
GND
A
B
GND
A
B
GND
A
B
GND
A
B
12 3 4
RS-485
WIEGAND
1 23 4
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
GND
+12V
+12V
GND
ETHERNET
BATT
12VDC SLA ONLY
PWR IN
TAMPER
AUX
GND
REX
DPI
1
REX
DPI
2
REX
DPI
3
REX
DPI
4
INPUTS RESET
N
COM
NO
N
COM
NO
N
NO
COM
GND
+12/ 24 V
N
NO
COM
GND
+12/ 24 V
N
NO
COM
GND
+12/ 24 V
N
NO
COM
GND
+12/ 24 V
DOOR RELAYS AUX
12 34 12
12VDC
24VDC
12VDC
24VDC
12VDC
24VDC
12VDC
24VDC
DC20
rhombus
Cable
Clips
DC20
Door Controller
Primary Power
Indicator
Tamper
Input
Nameplate
(inside front cover)
Backup Battery
Storage

6DC20 User Manual
Mounting Instructions
The DC20 is intended to be wall mounted indoors in a secured area, such as a locked server room
or utility closet.
To install, pre-drill pilot holes into the desired mounting surface in accordance with the mounting
specifications provided (see Appendix). Note that a 3/16” pilot hole is required if using the wall
anchors.
The DC20 contains six knockouts for wiring and conduit access throughout the enclosure.
Knockouts are ¾” US trade size and can be punched out by hand as needed.
Mounting the DC20
Connecting Conduit
TIP: Utilize the fifth mounting screw to hang the DC20 about the center keyhole slot located
towards the top on the back of the enclosure. Once levelled, the four hole locations can be more
easily marked on the mounting surface and pre-drilled.
After the holes have been pre-drilled, fasten the device to the surface using the included mounting
screws. The DC20 can be mounted on surfaces such as metal or concrete but appropriate #8 screws
should be used.

7
DC20 User Manual
Recommended Wiring
Wiring methods used shall be in accordance with the National Electrical Code, ANSI/NFPA 70.
All wiring of the DC20 should be performed prior to connecting power. Power should be removed
before attempting to service the DC20 or any of its connected devices.
DC20 is compatible with third-party Wiegand readers.
The 12VDC reader power supplies are rated to 660mA each. Terminals [OUT1] and [OUT2] are
configurable in Rhombus Console to support LEDs and buzzers.
Wire Type and Size
Wiegand Readers
WARNING: Failure to remove power prior to servicing the DC20 may result in damage to
connected devices.
Lock Power
Reader Power
Reader Data
Inputs
—
Solid
or Stranded Yes
Yes
Yes
Yes
—18 AWG 300 ft
18 AWG 300 ft
300 ft
300 ft
—
—
24 AWG
24 AWG
Wire Type Twisted
Pair Shielded
Minimum
Size
Maximum
Length
G
ND
A
B
G
ND
A
B
G
ND
A
B
G
ND
A
B
1 2
3
4
RS
-4
85
WIEGAN
D
1
2
3
4
+12V
GND
O
UT2
OU
T
1
D1
D0
+12V
G
ND
O
UT2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D
0
GND
+
12V
+
12V
G
ND
ETHERNET
BATT
12VDC SLA ONL
Y
PWRIN
T
AMPE
R
AU
X
G
ND
REX
DPI
1
REX
DPI
2
REX
DPI
3
REX
D
P
I
4
INP
U
T
S
RESET
N
C
O
M
NO
N
COM
NO
N
NO
C
O
M
G
ND
+1
2/
2
4
V
N
NO
C
O
M
G
ND
+
1
2
/
2
4
V
N
NO
COM
G
ND
+1
2/
2
4
V
N
NO
C
O
M
G
ND
+
1
2
/
2
4
V
D
OO
R RELAY
S
AU
X
1
2
3
4
1
2
1
2VD
C
24VD
C
1
2VD
C
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VD
C
DC2
0
rh
o
m
bus
WIEGAND
12 34
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0

8DC20 User Manual
GND
A
B
1
1
+12V
GND
OUT2 OUT1
D1 D0
+B - A GND
OSDP (RS-485)
Reader
DC20 is compatible with Rhombus DR20 Reader, DR40 Video Reader, and certified third-party door
readers using OSDP protocol over RS-485.
DC20 is equipped with six Form C relays with both Normally Open (NO) and Normally Closed (NC)
contacts that can be used to control door locks and auxiliary devices. Four of the relays can be used
alongside four individually selectable 12VDC or 24VDC power supplies to control power delivered
to locking hardware. Maximum current per output is limited to 830mA at 12VDC and 415mA at
24VDC.
Before powering the DC20, be sure to select the appropriate voltage [12VDC] or [24VDC] for your
end device.
The 12VDC power supply in the “WIEGAND” section can be used for RS-485 readers and powered
input devices up to 670 mA per output.
POWERED REMOTELY: In the case that an RS-485 reader is not powered by the DC20, a ground
wire must still be wired back to a [GND] terminal on the “RS-485” section of the DC20.
RS-485 Readers
Relays
G
ND
A
B
G
ND
A
B
G
ND
A
B
G
ND
A
B
1 2
3
4
RS
-4
85
WIEGAN
D
1
2
3
4
+12V
GND
O
UT2
OU
T
1
D1
D0
+12V
G
ND
O
UT2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D
0
GND
+
12V
+
12V
G
ND
ETHERNET
BATT
12VDC SLA ONL
Y
PWRIN
T
AMPE
R
AU
X
G
ND
REX
DPI
1
REX
DPI
2
REX
DPI
3
REX
D
P
I
4
INP
U
T
S
RESET
N
C
O
M
NO
N
COM
NO
N
NO
C
O
M
G
ND
+1
2/
2
4
V
N
NO
C
O
M
G
ND
+
1
2
/
2
4
V
N
NO
COM
G
ND
+1
2/
2
4
V
N
NO
C
O
M
G
ND
+
1
2
/
2
4
V
D
OO
R RELAY
S
AU
X
1
2
3
4
1
2
1
2VD
C
24VD
C
1
2VD
C
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VD
C
DC2
0
rh
o
m
bus
WIEGAND
12 34
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
+12V
GND
OUT2 OUT1
D1 D0
GND
A
B
GND
A
B
GND
A
B
GND
A
B
RS-485

9
DC20 User Manual
WARNING: Failure to select the appropriate voltage for each door power output may result
in damage.
NC
NO
COM GND VCC
1
12VDC
24VDC
N C
COM
NO N C
COM
NO
1 2
. . .
G
ND
A
B
G
ND
A
B
G
ND
A
B
G
ND
A
B
1
2
3
4
R
S-48
5
WIEGAN
D
1
2
3
4
+12V
GND
O
UT2
OU
T
1
D1 D0
+12V
G
ND
O
UT2
O
UT
1
D1 D0
+12V
GND
O
UT2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D
0
GND
+12V
+
12V
G
ND
ETHERNET
BATT
12VDC
S
LA
O
NL
Y
PWRIN
T
AMPE
R
AU
X
G
ND
REX
DPI
1
REX
DPI
2
REX
DPI
3
REX
DPI
4
I
NP
U
T
S
RESET
N
C
O
M
NO
N
COM
NO
N
NO
C
O
M
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
N
NO
COM
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
DOOR RELAY
S
AU
X
1
2
3
4
1
2
1
2VD
C
24VD
C
1
2VD
C
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VD
C
DC2
0
rh
o
m
bus
N
COM
NO
N
COM
NO
N
NO
COM
GND
+12/24V
N
NO
COM
GND
+12/24V
N
NO
COM
GND
+12/24V
N
NO
COM
GND
+12/24V
DOOR RELAYSAUX
123412
12VDC
24VDC
12VDC
24VDC
12VDC
24VDC
12VDC
24VDC
DC20
rhombus
The following wiring diagrams demonstrate some common configurations of locking hardware that
can be supported.
Fail Safe Electromagnetic Lock Fail Secure Strike Lock

10 DC20 User Manual
With the addition of an Access Power Controller
(APC), the DC20 can be deployed in applications
with an existing Fire Alarm Control Panel (FACP)
by the means of the dry relays. In the event of a fire
alarm, the FACP sends a signal to the APC, which
immediately disconnects the power supply of all
locking hardware connected through the DC20. In
the absence of power, doors that are wired as fail
safe will unlock.
Once the alarm has been dismissed, the APC will
reconnect power to locking hardware. Refer to
the documentation provided with the APC and
follow all manufacturer instructions related to your
specific application. Consult Federal, State and local
authorities for applicable regulations related
to access control integration with fire alarm systems.
Fail Safe Electromagnetic Lock
(Externally Powered by an APC)
Fail Secure Strike Lock
(Externally Powered by an APC)
Fire Alarm Control Panel (FACP) Interface

11
DC20 User Manual
Two inputs for Door Position Indicator (DPI) and Request to Exit (REX) devices are provided for each
door. DC20 inputs are compatible with contact-type devices with a NO or NC state.
An auxiliary input labeled [AUX] can be used to receive contact-type inputs from devices such as
intercoms or intrusion alarm panels and can be used to trigger events created in the Rhombus
Console.
To connect a device to the input, simply connect the two output wires of the end device to the
input. The default state (NO or NC) can be configured through the Rhombus App or Console.
All DPI and REX inputs are supervised and
support single- and double-line supervision
configurations with the use of user installed
end-of-line (EOL) resistors.
Physical wire runs of input circuits are
monitored for open wire or shorted wire.
When sensed, alerts are triggered in the
Rhombus Console.
EOL resistors should be placed as close as
possible to end devices. (16) 4.7KΩ resistors
are included with the DC20. The [Aux] input
is not supervised.
DPI/REX/AUX Contact Inputs
Supervised Inputs
REX
DPI
1
AUX
GND
. . .
G
ND
A
B
GND
A
B
G
ND
A
B
G
ND
A
B
1
2
3
4
RS-48
5
WIEGAN
D
1
2
3
4
+12V
GND
O
UT2
OU
T
1
D1 D0
+12V
G
ND
O
UT2
O
UT
1
D1 D0
+12V
GND
OU
T2
O
UT
1
D1
D0
+
12V
GND
O
UT2
OU
T
1
D1
D
0
GND
+12V
+
12V
G
ND
ETHERNET
BATT
12VDC SLA ONL
Y
PWRIN
TAMPER
A
U
X
G
ND
REX
DPI
1
REX
DPI
2
REX
DP
I
3
REX
DP
I
4
INP
U
T
S
RESET
N
C
O
M
NO
N
COM
NO
N
NO
COM
G
ND
+1
2/
2
4
V
N
NO
C
O
M
G
ND
+
1
2
/
2
4
V
N
NO
COM
G
ND
+1
2/
2
4
V
N
NO
C
O
M
G
ND
+
1
2
/
2
4
V
DOOR RELAY
S
A
UX
1
2
3
4
1
2
1
2VDC
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VDC
1
2VD
C
24VD
C
D
C
20
rhombus
AUX
GND
REX
DPI
1
REX
DPI
2
REX
DPI
3
REX
DPI
4
INPUTS RESET

12 DC20 User Manual
GND
+12V +12V
GND
ETHERNET
BATT
12VD
C
S
LA
O
NL
Y
PWR IN
TAMPER
Tamper Input
Proximity Sensor
G
ND
+12
V
+12
V
G
ND
ETHERNET
BATT
12VD
C
S
LA
O
NL
Y
PWR IN
TAMPER
An onboard accelerometer and proximity sensor will detect any significant movement of the DC20
and the enclosure cover. A 2-position terminal is also available to connect an optional wired contact
sensor. Movement detected by any of the 3 sensor types can be configured to generate an event in
the Rhombus Console. Before powering up the DC20, ensure cables are not obstructing the view of
the proximity sensor.
The DC20 supports 10/100BASE-TX ethernet. Use a CAT5 or CAT6 cable with RJ45 connector.
Plug a network connected ethernet cable into the RJ45 jack.
Power to the DC20 is provided by the included 100-240VAC to 12VDC power adapter. The power
cord is secured to the main board by a pluggable screw terminal. Once all other connections have
been made and terminal contacts are screwed firmly in place, ensure the pluggable terminal end
of the power adapter is connected before plugging the adapter’s power cord into a 100-240VAC,
50/60Hz 1.3A MAX wall outlet. Do not connect to a receptacle controlled by a switch.
Tamper
Ethernet
Power
G
ND
A
B
G
ND
A
B
G
ND
A
B
G
ND
A
B
1 2
3
4
R
S
-4
85
WIEGAN
D
1 2
3
4
+12V
GND
OU
T2
O
UT
1
D1 D0
+12V
G
ND
O
UT2
O
UT
1
D1
D
0
+12V
GND
OU
T2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D
0
GND
+12V
+
12V
G
ND
ETHERNET
BATT
1
2VDC SLA ONL
Y
PWRIN
TAMPER
AUX
G
ND
REX
DP
I
1
REX
DP
I
2
REX
DP
I
3
REX
DPI
4
I
NP
U
T
S
RESET
N
C
O
M
NO
N
COM
N
O
N
N
O
C
O
M
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
N
N
O
COM
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
DOO
R RELAY
S
AUX
1
2
3
4
1
2
1
2VD
C
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VD
C
1
2VD
C
24VD
C
DC2
0
rh
o
m
bus
GND
+12V
+12V
GND
ETHERNET
BATT
12VDC SLA ONLY
PWR IN
TAMPER
G
ND
A
B
G
ND
A
B
G
ND
A
B
G
ND
A
B
1 2
3
4
R
S
-4
85
WIEGAN
D
1 2
3
4
+12V
GND
OU
T2
O
UT
1
D1 D0
+12V
G
ND
O
UT2
O
UT
1
D1
D
0
+12V
GND
OU
T2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D
0
GND
+12V
+
12V
G
ND
ETHERNET
BATT
1
2VDC SLA ONL
Y
PWRIN
TAMPER
AUX
G
ND
REX
DP
I
1
REX
DP
I
2
REX
DP
I
3
REX
DPI
4
I
NP
U
T
S
RESET
N
C
O
M
NO
N
COM
N
O
N
N
O
C
O
M
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
N
N
O
COM
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
DOO
R RELAY
S
AUX
1
2
3
4
1
2
1
2VD
C
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VD
C
1
2VD
C
24VD
C
DC2
0
rh
o
m
bus
GND
+12V
+12V
GND
ETHERNET
BATT
12VDC SLA ONLY
PWR IN
TAMPER
G
ND
A
B
G
ND
A
B
G
ND
A
B
G
ND
A
B
1 2
3
4
R
S
-4
85
WIEGAN
D
1 2
3
4
+12V
GND
OU
T2
O
UT
1
D1 D0
+12V
G
ND
O
UT2
O
UT
1
D1
D
0
+12V
GND
OU
T2
O
UT
1
D1
D0
+12V
GND
O
UT2
O
UT
1
D1
D
0
GND
+12V
+
12V
G
ND
ETHERNET
BATT
1
2VDC SLA ONL
Y
PWRIN
TAMPER
AUX
G
ND
REX
DP
I
1
REX
DP
I
2
REX
DP
I
3
REX
DPI
4
I
NP
U
T
S
RESET
N
C
O
M
NO
N
COM
N
O
N
N
O
C
O
M
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
N
N
O
COM
G
ND
+
1
2/
2
4
V
N
NO
C
O
M
G
ND
+1
2
/
2
4
V
DOO
R RELAY
S
AUX
1
2
3
4
1
2
1
2VD
C
24VDC
1
2VD
C
24VD
C
1
2VD
C
24VD
C
1
2VD
C
24VD
C
DC2
0
rh
o
m
bus
GND
+12V
+12V
GND
ETHERNET
BATT
12VDC SLA ONLY
PWR IN
TAMPER
GND
+12V +12V
GND
ETHERNET
BATT
12VDC SLA ONLY
PWR IN
TAMPER

13
DC20 User Manual
The DC20 has provisions for a backup battery to support offline mode in the case of a loss
of primary power. The battery must be 12V Sealed Lead Acid (SLA) type, with F1 or F2 style
connectors. The maximum space reserved for a standby battery(s) is 300mm L x 80mm W x 110mm
H. Two new and unused batteries of the same make and model may be wired together in parallel to
increase standby capacity.
The battery capacity should be sized appropriately based on the power consumption of the overall
system and the desired run time during an outage. Many factors including, but not limited to, the
type of powered devices used (locks, readers and other power accessories), unlock frequency,
battery age, and even ambient temperature can affect the total backup duration.
Sealed Lead Acid (SLA) Backup Battery
GND
+12V
+12V
GND
ETHERNET
BATT
12VDC SLA ONLY
PWR IN
TAMPER
Up to 2 new and unused batteries of the same
size, make, and model can be wired in Parallel.
12VDC SLA 12VDC SLA
G
N
D
A
B
G
N
D
A
B
G
N
D
A
B
G
N
D
A
B
1
2
3
4
R
S
-4
85
WIE
G
AND
1
2
3
4
+
12V
G
N
D
O
UT2
OU
T1
D1
D
0
+
12V
G
N
D
O
UT2
OU
T1
D
1
D
0
+
12V
G
N
D
O
UT2
OUT1
D1
D0
+
12V
G
N
D
O
UT2
OU
T1
D1
D0
12VDC SLA ONLY
BATT
ETHERNET
TAMPER
GND
GND
PWR IN
GND
G
N
D
GND
+12V
+12V
+12V
+12V
+12V
+12V
GNDG
N
D
GND
ETHERNET
ETHERNET
ETHERNET
BATT
BATT
BATT
12VDC SLA ONLY
12VDC
S
LA
O
NL
Y
12VDC SLA ONLY
PWR I
N
PWR IN
TAMPER TAMPER
TAMPER
A
UX
G
N
D
R
E
X
DPI
1
R
E
X
DPI
2
REX
DPI
3
REX
DPI
4
I
NP
U
T
S
RESET
N
C
OM
N
O
N
COM
N
O
N
N
O
COM
G
N
D
+12
/
2
4
V
N
N
O
C
OM
G
N
D
+12
/
2
4
V
N
N
O
C
OM
G
N
D
+12
/
2
4
V
N
N
O
COM
G
N
D
+
1
2
/
2
4
V
D
OO
R RELAY
S
AUX
1
2
3
4
1
2
1
2VD
C
24VD
C
1
2VD
C
24VDC
1
2VD
C
24VDC
1
2VD
C
24VD
C
D
C
2
0
rh
o
m
bus

14 DC20 User Manual
Troubleshooting
Press the RESET button when you are instructed
by the controller display or a technical support
representative to reset the DC20.
A character display will present useful information during installation and operation about the state
of the controller.
Reset Button
Display Messages
LED Indicators
Each relay on the DC20 has a green status LED
indicator. When the relay is in an energized state,
the indicator will illuminate. Conversely, the
indicator will extinguish when the relay is
de-energized.
The green LED indicator adjacent to “POWER
IN” terminals on the Power side of the DC20
indicates the presence of primary DC power from
the provided power adapter. If the primary power
is removed, as would be in the case of an AC
power outage, the indicator will extinguish.
NOTE: This behavior remains constant when
a backup battery is connected.
. . .
The DC20 is equipped with a coin cell battery (CR1225) to maintain system time during and after
prolonged power outages before the network time can be re-established. The recommended
replacement interval for this battery is 5 years. A notification will be generated when the battery
reaches a low level of charge. Replacement of the RTC battery should only be performed by
certified partners or with specific guidance provided by Rhombus Customer Support.
Real Time Clock (RTC) Battery Replacement

15
DC20 User Manual
Registration
Specications
To get started, scan the QR code provided with
the DC20 or visit www.rhombus.com/setup/dc20.
For more information, go to www.rhombus.com/support
or email us at [email protected].
Getting Started
Support
General
4-Door Controller
Rhombus Cloud Connected
Lockable Wall Mounted Enclosure
Ofine Mode (SLA Battery not included)
Dimensions: 330 mm x 313 mm x 113 mm
[13.0 in x 12.3 in x 4.4 in]
10 Year Warranty
Connectivity/Power
3.5W Power Consumption (Standby)
Power Adapter (100-240VAC, 500/60Hz, MAX 1.3A)
Ethernet 10/100BASE-TX, Auto MDI-X
BLE for Mobile Registration
Environmental
Operating Temperature: 0°C to 50°C [32°F to 122°F]
Operating Humidity: 10% to 90% RH
UL Type I Metal Enclosure
Compliance: FCC, IC, NDAA
Hardware
(6) Form C Dry Relays max 3A at 24V AC/DC
(4) Power for Locking Hardware: 830mA @ 12VDC
and 415 mA @ 24VDC
(8) DPI/REX Inputs (Unsupervised or Supervised)
(1) AUX Input (Unsupervised)
(4) Power for Reader: 660mA @ 12VDC.
(4) Wiegand Reader Ports
(4) RS 485 Reader Ports
Tamper Switch
OLED Character Display
Status LEDs

16 DC20 User Manual
Appendix
Mounting Dimensions

17
DC20 User Manual
Wiring Label – Revision 8/24/2023

18 DC20 User Manual
Notes

19
DC20 User Manual

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