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Hi I have the same system. I keep getting the message that the wireless supervision fault with the siren. I put new battery in siren 2 years ago and have tested it to verify still ok. I re learnt once which sorted for a week but fault back. I don't have engineer code, it was installed for...

can anyone help me, I have a 1929 house with servant bells and an annunciator panel with solenoid flags. The circuit is fed with a low voltage AC supply and a conventional AC ball is used. Unfortunately the bell has packed in and i cant find a 3V replacement bell. What voltage can I use on the...