Features: - BT connection, APP real-time control. - Single fire line installation, the ordinary 86-type switch can be replaced directly. - A good home assistant, suitable for Yeelight / Mijia LED Ceiling Light series - Button battery built in the switch(paste version), use time up to 2 years.(40times/press + 10 times rotation a day) - Convenient for adjusting the light brightness, color temperature, and light color - With V0 fire retardant back cover and precise structure, the switch ensures safe and durable use. - Exquisite practical details: Fast pairing button, LED indicator, rotation button 86 Size(Wall Insert) * Turn on the bottom button before use Model: YLKG07YL Size: 86x86x44.5mm Wireless: BLE 4.2 Input Voltage: Single Fire Line 220V/50Hz Load range: 180W Work temperature: -10 - +40℃ Work humidity: 0%-85% Paste Version Model: YLKG08YL Size: 86 x 86 x 44.5mm Wireless: BLE 4.2 Battery: CR2032 button battery (Remove the battery insulation sheet before use.) Use time: 50 times per a day (40 times/press + 10 times rotation, last for 2-year use) Work temperature: -10 - +40℃ Work humidity: 0%-85% APP: Mi Home APP/ Yeelight APP (Please download the APP on the Google Play or APP Store) Control Distance: 30 meters MAX Press time: 50000 times MAX Package Weight: Approx. 300g/3.70oz Package Size: Approx. 10*10*6cm/7.5* 4.96 *1.46in Package list: 1 * Switch Note: 1.Item color may show slight aberration due to different shooting light and monitor display. 2.Product size, product weight, and related