Sonoff T2 US Smart Wifi Wall Light Switch 1 2 3 Gang Touch/WiFi/433 RF/APP Remote Smart Home Wall Touch Switch Works with Alexa Google Home Product Overview:NOTE 1:The Neutral wire is required.NOTE 2:The RF control frequency supported by T2 is 433MHz. Specification Power Supply: 100V-240V AC Overview Wirele Standard: 802.11 b/g/n & 433MHz RF Security Mechanism: WPA-PSK/WPA2-PSK Material: PC V0 Dimension: 120mm*74mm*38mm Gang: 1/2/3 APP Remote Control Turn lights on/off from anywhere, via free IOS and Android mobile APP eWelink. Timing/Countdown/Schedule Turn Set scheduled/countdown timers to turn on/off at a specified time. Share Control Control your smart home together with your family/friend. Smart Scene Triggered on/off by temp, hum or other environmental conditions from the sensor. Compatibility Works perfectly with Alexa, Google Aistant, IFTTT, Google Nest. The Sonoff T2 US Smart Wall Touch Switch series are 1-3 gang US/AU standard WiFi RF remote control luxury smart light switch. The wirele wall switch can be added to iOS/Android App eWeLink via WiFi, allowing users to remotely turn on/off connected lights or appliances separately from anywhere at any time. With the App eWeLink, you can create scheduled/countdown timers to auto-turn on/off devices at the specified time. You can also create scenes to turn on/off all the devices in your house with one tap.