I have had to change the bell box on my comfort 1 alarm and have tried fitting the above bell box and with somewhat noisy results.
The connections available are:-
STB- which I have connected to STR-
TRIG- which I have connected to SRN-
HOLD OFF- (also referred to as tamper supply) which I have connected to Tamper 0V
HOLD OFF+ which I have connects to SRN+
RTN- which is have connected to TR tamper return
Now having re read the manual a few times this evening I think I have identified the following things I need to revisit but would be grateful for input.
1.) HOLD OFF+ should actually be connected to 12VF instead.
2.) 1K ohm resistor between negative trigger and +12V hold off
3.) need to use engineer mode to make sure I am not triggering from tamper circuit.
Anything obvious I have missed or wired up incorrectly?