More 40++ Closet Door Light Switch
More 40++ Closet Door Light Switch. Unfollow closet door light switch to stop getting updates on your ebay feed. I'm surprised more houses don't have these. The top countries of supplier is china, from. It is controlled by a ti msp430g2001 microcontroller that is powered from 3.3v dc derived if at least one of the doors is open, the microcontroller switches a relay to turn on an overhead light.