Hi,
I have an old-fashioned 3v battery doorbell which I wanted to extend wirelessly down to end of my garden so I bought a Friedland wireless extender consisting of a transmitter unit and receiver chime.
http://doorchimesuk.co.uk/catalog/p...d=184&osCsid=c416697d9df28654eede0cd891f58b62
the transmitter has a 1.5 watch battery inside and 2 input wires which when shorted trigger the remote chime. so far so good.
However when I wire the transmitter into my existing bellpush, the 3v in the circuit stops the transmitter firing.
I tried isolating the transmitter with a cheap 5v sealed reed relay from maplins:
http://www.maplin.co.uk/sealed-reed-relays-2605
which works a treat BUT flattens the battery of the transmitter within a matter of a week, so I guess the "control circuit?" of the relay must be drawing some current all the time.
does anybody have another solution that will work while preserving the transmitter battery?
Thanks
john
I have an old-fashioned 3v battery doorbell which I wanted to extend wirelessly down to end of my garden so I bought a Friedland wireless extender consisting of a transmitter unit and receiver chime.
http://doorchimesuk.co.uk/catalog/p...d=184&osCsid=c416697d9df28654eede0cd891f58b62
the transmitter has a 1.5 watch battery inside and 2 input wires which when shorted trigger the remote chime. so far so good.
However when I wire the transmitter into my existing bellpush, the 3v in the circuit stops the transmitter firing.
I tried isolating the transmitter with a cheap 5v sealed reed relay from maplins:
http://www.maplin.co.uk/sealed-reed-relays-2605
which works a treat BUT flattens the battery of the transmitter within a matter of a week, so I guess the "control circuit?" of the relay must be drawing some current all the time.
does anybody have another solution that will work while preserving the transmitter battery?
Thanks
john