Thanks for the reply. The Reson8 box I was looking at has
RTN
Hold Off+
Hold Off-
TRIG
STB
So, from PSU, connect 12V to Hold Off+ and 0V to Hold Off- and then jumper TRIG and STB to Hold Off-?
When you say some sounders won't like being powered up like this, what might possibly happen...
Hi
Is it possible to use an external siren/strobe without an alarm control panel. I was considering wiring to a 12V transformer plugged into a smart power switch and then use my home automation system to trigger the smart switch and thereby activate the siren/strobe. I'm not really concerned...