1. Bluetooth connection, supports most Yeelight smart ceiling lights 2. No need to install, Mount as you wish 3. Dim via one button, free to switch multiple lighting modes 4. Lights off and not offline 5. Low power consumption, longer standby time 6. German Red Dot Design Award Products 86×86×25mm Wireless Connection: BLE 4.2 Standby Time: 3 years