Adding an additional alarm siren?
Inside the the old alarm unit there’s a 2 pin that goes to the piezo siren, but I’m not sure if that’s Dc voltage. A pulse or AC? There’s a small transformer right before the siren on the circuit board so it maybe be an AC piezo.
Need a wiring diagram for the alarm system and really would love one for the internal siren but not holding my breathe there. Anybody help out?


