Disabled toilet alarm

[DPG]

Maybe use the cable to switch a relay, and have the beacon powered at the remote (office) end?

And use decent gauge cable to minimise the volt drop.

 

[Avo Mk8]

Really need to know the current consumption of the sounder (sorry - beacon!) that's going to be used. The couple of piezo sounders I looked at on the interweb take 250mA to 370mA, so this may not be too much of a problem, unless the sounder is a lot more than that.

1mm sq cable would drop about a volt with those figures.

 

[DPG]

Really need to know the current consumption of the sounder that's going to be used. The couple of piezo sounders I looked at on the interweb take 250mA to 370mA, so this may not be too much of a problem, unless the sounder is a lot more than that.

1mm sq cable would drop about a volt with those figures.

Good point. Could well be not much more than a relay coil.