In article ,
dennis@home wrote:
I don't see why he doesn't just use a battery powered flashing LED like
I suggested ages ago. All he needs is a double pole switch, one pole
switches the light the other the LED. The batteries will last for
months/years as the LED on flashes when the switch is on. No fancy
components required. The 20A grid switches I posted a link to have more
than enough insulation to do this.

There wouldn't be room for even a PP3 inside most back boxes. Certainly
not a plaster depth one.

But Phil has already solved his problem.

--
*Rehab is for quitters.

Dave Plowman London SW
To e-mail, change noise into sound.