How do I build a wireless garage door LED sensor warning light?

I want to be able to build a DIY garage Door warning sensor that is wireless and will give me a warning LED light when door is open.

iceng15 days ago

Use a remote doorbell and replace the chime with LED..

If your handy it should use NC as the button..

Easy !

rickharris16 days ago

Put a micro switch on the edge of the door frame and wire it up to an LED.

6 volt battery

330 ohm resistor LED. and a switch. Simple.

door alarm.jpg