I have a desa DD100S wireless door chime but for some unknown reason the bell push is not working, I have tried replacing the battery but still unable to ring chime. The actual base unit is fine and when I press the melody button it sounds out loud and clear. Please is it possible to buy the bell push? Thank you Sandra Kirby

Hi,
I had the same issue with my Siemens W725TC. Basically, you need to remove the batteries from both the door chime and the push button unit. Leave for 10 seconds and then reinsert the battery into the push button and then the batteries into the door chime unit. The door chime unit will then synch itself back with the push button unit. Worked for me, so hopefully it does the trick for you. Also, if you find your door bell starts ringing for no reason this is because it has synchronised with another door chime unit (ours linked to the neighbours across the road so we always knew when they had a visitor - lol). Repeat this process and it should sort out the problem. Hi, I had the same issue with my Siemens W725TC. Basically, you need to remove the batteries from both the door chime and the push button unit. Leave for 10 seconds and then reinsert the battery into the push button and then the batteries into the door chime unit. The door chime unit will then synch itself back with the push button unit. Worked for me, so hopefully it does the trick for you. Also, if you find your door bell starts ringing for no reason this is because it has synchronised with another door chime unit (ours linked to the neighbours across the road so we always knew when they had a visitor - lol). Repeat this process and it should sort out the problem.