Battery Powered - Wireless Dimming Whether you're a homeowner or renter, this dimming device is perfect for you! It's battery-powered , so you don't have to drill holes and hardwire it to the mains circuit. All you have to do is add one CR2032 battery, connect it wirelessly to the switch, and it's good to go! Please note that this product includes the receiver only . You must purchase the switch ( 1-gang , 2-gang , or 3-gang ) separately to make it function! Nevertheless, having this device will enhance your lighting system, allowing you to customise the brightness level however you want. So, if you're going to improve your lighting experience and make it more personal and efficient, integrate this device into your system! 30 Metres Control Distance Having wireless connectivity is a game changer! It allows you to connect to a device without having to wire or attach things manually. Furthermore, you don t have to deal with untidy cables, which can be an eyesore if left unattended