[APP Remote Control] Download the Smart Life/Tuya Smart APP on your mobile phone or tablet to control the light switch anytime and anywhere. [Hands-Free Voice Control] Compatible with for Alexa , for Home, etc., you can voice control the light switch with just one . [Timer, schedule, countdown function] (Note: Please turn off the power during installation) [3 Switch Types to Choose from] Rocker switch flip changes status/status synchronization and self-reset switch. [Interlock Function] Only allows one channel to open while closing other channels. [Group control function] Multiple switches in different rooms can be grouped to achieve group control function. [Family Sharing Function] You can share limited permission switches with family members to create a smart home with them. [Linkage function] It can be linked with other switch modules, sensors and electrical appliances in the home, making it possible to create different scenes [WiFi Smart Switch] Turn on Bluetooth, the phone will quickly find the device, the connection, and make the connection stable. WiFi connection, no gateway required. Voltage:AC100-240V 50/60Hz Maximum. Load:LED 250W 10A Working frequency:2.412GHz-2.484GHz Working temperature:-10℃+40℃ WiFi smart switch protocol:WIFI IEEE 802.11b/g Operating range Less than 100m Protection level:IP20 Product type:4-way switch module Colour:White Material:Plastic Size:(width x depth x height):39x39x19mm Package Contents: 2 * circuit breaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.