Features: 1Ultrathin luxury tempered glass panel crystal clear never fades keeps as clean as new. 2Control method support touch voice control mobile APP threeinone multifunction control. 3Low power standby energy saving and safe quick response no delay. 4Thunderstrike protection antisurge effective protection circuit. 5The neutral wire and live wire design directly replaces the mechanical switch. Specification: Item Type: Curtain SwitchMaterial: PC+ABSColor: BlackProduct Size: Approx. 8.5x8.5x3.5cm / 3.3x3.3x1.4inWeight: Approx. 174g / 6.1ozRated Current: 10AWireless Standard: WiFi (2.4G 802.11 b/g/n)Control Distance: Unlimited (under 2G/3G/4G/WiFi network)Applicable System: for IOS 8.1/Android4.1 and aboveApp Language: Adaptive Chinese/English/Korean/German/French/Spanish/Italian/ArabicControl Method: Touch voice control mobile APP three-in-one multi-function control Package List: 1 x Switch2 x Screw1 x Instruction Manual Note: 1. Please allow 12in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Automatically calculate the travel time required for the full opening and closing of curtains of different sizes and support precise voice commands or progress bar percentages to open or close the curtains. The user can open or close the curtains in percentage according to the scene.