This causes the relay’s LED to go off and the lamp too. There is no need for external power supply because the light sensor switch is powered directly from the 220V mains. D1 … D5 diodes rectifies the ...

Hi guys, just a short article about a light dimmer switch that I opened a few days ago. I wanted a way to adjust the speed of a 220V fan and a friend of mine told me that I can use a regular and cheap ...

when you approach the switch, the built-in motion sensor lights it up and indicates where the current brightness is on its spectrum. You can slide this up and down to control the light level ...