Summary: can be moved from within the house which will light a lamp in the door bell switch The lamp can illuminate the words Please Wait for anyone with walking difficulties Circuit diagram Notes The circuit uses standard 2 wire doorbell cable or loudspeaker wire In parallel with the doorbell switch S1 is a 1N4001 diode and a 12 volt 60mA bulb The bulb is optional it may
Image Dimensions: 908 x 390
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