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
total load (resistance/impedence). This Output should never be loaded below 2 Ohms total load. 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
L
IN
E
SEI
Z
E
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
R1
Z1
NEG
Z2
Z3
NEG
Line Seize
LED is ON if Dialer/
Modem is in use (communicating)
J3
-
C
+
B
A
1
1
M1EZ8 Control Board
