Wiring The 7845Gsm; Wiring For Ecp, 4204 And Two-4204 Modes - Honeywell AlarmNet 7845GSM Installation And Setup Manual

7845GSM/7845GSMCN Installation and Setup Guide

Wiring the 7845GSM

Unshielded, 22 AWG cable is recommended for 7845GSM power/data wires.

Wiring for ECP, 4204 and Two-4204 Modes

Most Honeywell ADEMCO control panels support LRR-ECP data communication, (e.g.,
VISTA-10P, VISTA-15P, VISTA-20P, LynxR-I, VISTA-128BP and VISTA-128FBP). However,
there are some panels that do not. Check the Installation and Setup Guide for the control
panel you are using to see if it supports ECP communication.
Connect the 7845GSM to a compatible Honeywell VISTA control panel's ECP terminals, in
parallel with keypads and other peripheral devices such as RF receiver, VIP module, etc.
Wire length/gauge limitations are the same for the module as they are for keypads and other
peripheral devices. To wire the module for ECP or 4204 modes, see Figure 2 and make the
following connections:
To install a 7845GSM with a LynxR-I Security System, wire the devices as shown in
Figure 3. Refer to the LynxR-I Installation and Setup Guide.
2-2
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Table 1. Wiring connections for ECP or 4204 modes
7845GSM
Terminal 3 V+
Terminal 4 GND
Terminal 5 Data In
Terminal 6 Data Out
+12 V AUX
GND
DATA OUT
DATA IN
VISTA CONTROL PANEL
Figure 2. Wiring a VISTA for ECP Mode or 4204 Modes
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Control
+12 V Aux
Ground
Data Out
Data In
TRANSFORMER
TB1
AC INPUT 1
1
AC INPUT 2
2
RED
3 ECP (+) VOLTAGE INPUT
BLK
GND
4
YEL
5 ECP DATA IN
GRN
6
ECP DATA OUT
J1
BATTERY
K14139
7845GSM
7845GSM-009-V0