T0 Wi-Fi Smart Wall Touch Switches (This series of products requires a neutral wire.） T0 1/2/3 gang Function 【Remote Control & Sync Status】Just tap on eWeLink App to turn on/off your device anytime and anywhere, and get the sync status of your devices. 【Touch Control】A slight tap for easier control, a modern and elegant decoration on your wall surface. 【Timer & Schedule】Set up timing schedules to turn on/off lights. 【Hands-Free Voice Control】Compatible with Alexa & Google Assistant, use your voice to control the devices. .