Which would work better? A flint arrow or some form of ray gun with a dead battery?
Fine if you don't mind paying a much higher price. These things are made so they just about work for the majority. To design and make a foolproof one is likely impossible and expensive to try.
Brian may be using a system with a cordless handset he can carry about with him so he doesn't have to run to a box on the wall to respond to callers.
Owain
It depends on how far from the front door you want the ringer. Yes, I could run cables to our respective studies and have an extension lead to take a bell into the garden, but wireless is so much easier. My Friedland set-up: 1 bell, 2 mains receivers and one battery receiver has worked well for many years.
The indoor bit can be wireless if that suits, but the problems seem to stem from the outdoor bit being wireless (no power for an attention grabbing LED on the button, no power to allow it to listen for calls from indoors, only talks when outdoor button has been pressed) ... in short, wires work.
But can be reliable enough when it allows lots of codes and indicates when the battery needs replacing and is much cheaper and easier to install.
Much cheaper to add when there is no wiring for it.
No technical reason why it can't do the intercom feature initiated by the householder and still have a viable battery life.
Doesn?t have to have a much higher price anymore.
These things are made
Doesn?t have to be foolproof, just have a unique coding and that is already available for car keys.
No reason why it has to be now that there are so many with unique codes for cars and garage doors.
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