APP & RF for Remote Control The eWeLink app allows you to control your SONOFF device anywhere with a single tap via an iOS or Android smartphone, with no distance limitations. You can also control it with the 433 MHz RF remote control when a smartphone network is unavailable. Scheduled Control Automatic By presetting timers or schedules on the eWeLink App, a lamp can be automatically turned on/off at a specific time. Smart Scene You can create smart scenes so that one SONOFF device can turn another on/off or group multiple devices together and use them with a single tap. Hands-Free Voice Control The SONOFF T3US1C WiFi switch is compatible with Amazon Alexa (Amazon Echo/Echo Dot/Amazon Tap) and Google Home Assistant. It allows you to conveniently use your voice to control your home devices hands-free. NOTE 1. Disconnect power before installing the device. 2. A neutral wire is required for the device. 3.The router must use the 2.4 GHz frequency (5.0 GHz WiFi is not supported), but there are no limitations for the network used by smartphones (2G/3G/4G/WiFi networks are fine).
