Smarter wall switch. Indoor range up to 22 meters. No batteries or cables required. Compatible with Hue and/or Apple HomeKit. Uses Hue bulbs as a repeater. Easy operation both manually and via app. Settings for brightness and light scenes. The wireless and battery-free Friends of Hue smart switch offers effortless control for the entire Philips Hue universe. With the switch, up to 50 Philips Hue lamps and lights can be controlled simultaneously. Thanks to Energy Harvesting technology, the Friends of Hue switch generates enough energy with each press to send a wireless command. This means that no cables and no batteries are needed, and the switch never needs to be charged.