SmartAlarm Instruction Manual Rev 2
Page 101 of 115
SECTION 19
– COMMUNICATIONS
Port 1
Connection Details
An standard 4P4C RJ11 socket is provided on the rear of the SmartAlarm for
systems equipped with the Modbus RTU option which provides the following
connections:-
Port 1 Connection Details
– Smart Alarm
1. TxA
2. TxB
3. RxA
4. RxB