Elk ELK-M1EZ8TWI User manual

Instructions Printed On Inside
828-397-4200 Voice
828-397-4415 Fax
http://www.elkproducts.com
email: [email protected]
PO Box 100 • Hwy. 70W • Hildebran, NC 28637 • USA
M1EZ8 Two Way
Listen-in Interface
ELK-M1EZ8TWI
APPLICATION:
The ELK-M1EZ8TWI Interface allows micro-
phones to be connected to the ELK-M1EZ8 for
two way voice verification and listen-in. It fea-
tures 3 separate microphone zones with up to 4
microphones per zone. Programming options
and operation procedures are already built into
the M1EZ8 control.
FEATURES:
•Adds Listen-in Microphones to the M1EZ8
•Adds Amplified Talk-back Speaker Output with
Adjustable Volume Control
•Powers Microphones and Performs Switching
•Provides 3 Separate Microphone Zones
•Each Listen-in Zone Can Have Up to 4 Mics
SPECIFICATIONS:
•Requires ELK-M1TWM or M1TWS Microphones
•Operating Voltage: 12 Volts D.C.
•Speaker (Output) Load: 2 to 16 Ohms
•Current Draw: 50mA to 80mA (depending on
load and volume setting)
•Housing Dimensions: 4.375" x 3.0" x 1.125"
•Circuit Board Dimensions: 3.5" x 2.75"
NOTE: Use of Two Way Listen-in may be
unlawful or regulated by local or state law/or
ordinances. It is the responsibility of the
Installer to check before using this feature.
M1EZ8TwoWay
Listen-inInterface
ELK-M1EZ8TWI
08/05
OPERATION
A listen-in session can be initiated from any zone
which has the "two way listen-in" option enabled.
After the zone alarm is transmitted, the dialer will
hold the line for up to 60 seconds, allowing the
CS Operator to press the tone command *55* to
initiate listen-in. If this tone command is not
received, the dialer will hang-up and release the
phone line.
NOTE: An active two way session will terminate
automatically after 3 minutes, unless manually
extended using command 7. Tone Commands
are summarized below:
Tone Commands:
*55* BEGIN LISTEN-IN - This command is used
by the Central Station to initiate listen-in.
NOTE: All 3 microphone zones are initially
active when listen-in begins. Use tone com-
mand 4 options to select mic zones.
1 TALK - Toggles (turns on) Output 1 speakers
allowing you to talk to the premises.
2 LISTEN - Toggles (turns off) Output 1
speakers allowing you to listen.
3 MAX. SENSITIVITY - Raises the microphone
gain to maximum sensitivity.
4 MICROPHONE SELECT -
40 Selects ALL microphones
41 Selects Microphone Zn 1
42 Selects Microphone Zn 2
43 Selects Microphone Zn 3
5 - [future use]
6 LOW SENSITIVITY - Lowers the microphone
gain to minimum sensitivity.
7 EXTEND TIME - Restarts 3 minute listen-in.
8 TERMINATE FOR NOW - Ends the listen-in
session but allows callback restart within 1
to 60 seconds (programmable). Control will
answer on first ring during this time.
9 9 TERMINATE SESSION - Ends the listen-in
session without any callback allowed.
0 - [future use]
* CANCEL last key-press (undo )
# - [future use]
Operation of the two way listen-in feature is affected
by the following installer programming options:
- Menu 05-Zone Definitions, Option 06 "Enable Listen-
in" must be enabled "Yes" for any triggering zone(s).
- Menu 07-Global System Definitions:
Option G31 "2 Way Listen-in" must be enabled "Yes".
Option G32 "2 Way Callback Time" is a timer value
which may be set to allow time for the CS to callback
and initiate a listen-in session after dialer hangup.

INSTALLATION
The following equipment is required: ELK-M1EZ8TWI Interface, 8 Conductor J7 Cable (included), and at least 1
M1TWS Speaker/Microphone or M1TWM Microphone.
1. Mount the Interface near the M1EZ8 main board using either double sided tape or screws. The 8 conductor,
12" audio/power cable must be capable of reaching connector J7 on the upper right side of the M1EZ8 board.
2. Install at least one Microphone/Speaker (M1TWS) near the center of the building. Recommended wire is 22 to
24 gauge UTP (unshielded twisted pair) for the microphone, and 18 to 20 gauge for the speaker.
3. Connect the first microphone to the two terminals marked Mic 1. There are 3 microphone zones (inputs).
During a listen-in session the operator can choose to listen to ALL zones or select a specific zone. See
operation instructions. Each microphone zone is capable of handling up to 4 microphones.
4. Plug one end of the 12" audio/power cable into connector J1 on the M1EZ8TWI board. Connect the other end to
connect J7 on the M1EZ8 board.
5. Connect one or more 8 Ohm speaker(s) to the SPKRS output terminals. These speaker(s) can only be used
to for "talk back" during a two-way listen session. NOTE: The maximum number of speakers is based on the
totalload(resistance/impedence). ThisOutputshouldneverbeloadedbelow2Ohmstotalload. Typically
that allows up to four 8 Ohm speakers to be connected in parallel. To minimize current draw multiple
speakers may have to be series/parallel wired.
6. Pre-adjust the volume control knob to a low initial setting.
7. Power up the control and conduct a listen-in test.
NOTE: Outputs 7, 8, and 9 automatically become 'internally' assigned as the triggers for microphone zones 1, 2,
and 3 whenever the "Two Way Listen-in" option is enabled in the M1EZ8 Installer Programming. See Menu 07-
Global System Definitions, option 31.
ELK-M1TWS
Mic/Speaker
Mic Zone 2
White & Black = Speaker
Green (s) = Microphone
ELK-M1TWM
Microphone
Mic Zone 3
(2 Green Wires)
ELK-M1TWS
Mic/Speaker
Mic Zone 1
White & Black = Speaker
Green (s) = Microphone
Plug 8 conductor
cord into J7
Example of 2
Parallel Speakers
Diagram of ELK-M1EZ8TWI Listen-in with 2 Mic/Speaker Zones and 1 Microphone only Zone
NOTE: Use of Two Way Listen-in may
be unlawful or regulated by local or
state laws and/or ordinances. It is the
responsibility of the Installer to check
before using this feature.
ELK-M1EZ8TWI
Max. 4 mics
per microphone
zone
Mic 1 Mic 2 Mic 3
Microphone Zones
Mic 1
Mic 3
Mic 2
Mic 4
Two Way Listen-in Interface for M1EZ8
Mic 1
Mic 3
Mic 2
Mic 4
Mic 1
Mic 3
Mic 2
Mic 4
SPKRS
Volume
Increase
Nominal load
2 to 8 Ohms
To J7
on
M1EZ8
Volume
Increase
LINE SEIZE
Aux Data Bus (J3)
For wireless receiver.
Presently works with ITI /
Caddx NX408E, NX416E, or
NX448E
Two-Way
Listen-In (J7)
PHONE LINE HOUSE LINE
TIP RING T1 R1Z1NEGZ2Z3NEG
Line Seize LED is ON if Dialer/
Modem is in use (communicating)
J3
-
C
+
B A
1
1
M1EZ8 Control Board