Byron instruction manual

https://www.manualslib.com/manual/457405/Byron-By101.html

Also there are youtube videos on installation online.

http://www.free-instruction-manuals.com/pdf/pa_359218.pdf

another byron wireless door chime , the same model as what you have got

Check inside could be that the contacts are carodded clean with electronic spray

Doubtful they are compatible. If they are set by dip switches and you set them the same bot doesn't work-not compatible.

Byron have product support on their website.Try them.
Brian Calland

Sorry but I've got same problem. Keep having to replace batteries in door unit. Expensive!

i have a byron sx1 door bell and its picking up someone elses help

I have the same thing happening, it’s your neighbours, they have a similar door bell to yours but set with a different chime. When someone presses their bell yours rings too hence why when you go to the door there is no one there. It was driving me mad!!

From User Guide: Interference from a similar unit operating nearby: a) simply remove the batteries from the push button and door chime units and rest for 10 seconds, this will erase memory b) Insert the batteries into the push button and door chime units, the door chime unit will give 2-beeps to indicate that it is ready for the new registration code. Press the Push Button once, it will generate a new operation code randomly and send a wireless ignal to the door chime unit and it will sound to indicate that new operation code is registered and memorised.
(Note with this unit SX85R the door chime is mains powered, not battery powered, but above instructions are the same)