Smart Remote Control: SONOFF Zigbee switch can set a countdown, schedule, and loop timers to smart your light. It supports the APP and voice remote control, which makes your life easier. Home Assistant Compatible: Integrates seamlessly with Home Assistant using Zigbee2MQTT, offering smart light control and effortlessly managing your home's lighting system. Super Tiny Size: This smart light switch is 40% smaller than the SONOFF ZBMINI smart switch. The size is 3.95 x 3.3 x 1.68 cm, which suits any standard junction box installation. Support External Switch: Our relay switch can work with various external switches to control your devices, such as rocker switches, to achieve two-way control. Relay Function: SONOFF smart switches for lights support the relay function, which can easily improve the quality of Zigbee communication. You can turn on the turbo mode to enhance the signal strength.