Stylish Design: Stylish brushed aluminium design will blend seamlessly with your décor, available in black or white. Requires 2.4ghz WiFi, minimum 35mm deep back box & neutral. LED backlight:Soft red/blue Indicator shows the Light on/off clearly.And help you find the position of the switch easily in darkness. App Control: Monitor & control your lights with your smartphone from anywhere in the world with the free iOS & Android Homeflow Smart Life app. Left a light on? No problem, turn it off from your phone. No hub required! Timer Setting:Take full control of your Home&Office lights intelligently with the timer feature on your App,which owns a 5+1+1 day programmable schedule to allow you to plan the exact time in advance to turn lights on or off automatically. Auto on/off feature offers you the countdown option of 1 min/5mins/30mins/1hour etc.