This is a wireless switch for use with lighting and other devices in the house. The switch uses no battery, so it should last for thousands of uses. The receiver installs inside the light fixture or fan or ??? The switch detaches from the cover plate for portable use. It will operate for AC voltage from 80 to 275 volts. With a wireless range of 300 feet, this unit will allow us to control the lights in the barn without needing to leave the house instead of going out in the coldv(brrrr). A++ device
rec,
https://www.amazon.com/dp/B073DZQL8H #WSDCAM #Review #Wireless #LightSwitch