Have a 20+ yo Yale alarm system with wired siren and battery movement sensors.
The control unit has started showing AC Power Failure message recently, the AC adaptor itself seems to be working - warm and when disconnected control unit goes off, don't think it has any battery charge left, so must be working off AC.
Possibly just a glitch. Can I just ignore it, does not bother me much, but I am concerned about siren going off at the middle of the night at some point because of it?
The control unit has started showing AC Power Failure message recently, the AC adaptor itself seems to be working - warm and when disconnected control unit goes off, don't think it has any battery charge left, so must be working off AC.
Possibly just a glitch. Can I just ignore it, does not bother me much, but I am concerned about siren going off at the middle of the night at some point because of it?
