Relay Status Settable:According to your living habits and needs, set the device on/off after the power on or maintain the light state, so that your home equipment can operate normally. Multi-control Association:No worry about rewiring trouble, you can realize double control or even multiple control on one light after setting in App. Support High-power Appliances:It supports to use with electrical appliances under 16A, including variety of high-power household appliances. Timer Function:Set for turning devices on and off to achieve automated appliance management for a more convenient life. Product type: Smart Switch Module Wireless Protocol: ZigBee Operation temp: -10℃-65℃ Case temp: Tc: +80℃(Max.) Operation Range: less than equal 70m IP rating: IP20 Frequency band: 2.412-2.484GHZ Maximum radio transmit power: Less than +10dBm Colour:As Shown Material:plastic Package Contents: 1 x Switch module 1 x Bracket 1 x English instruction manual(Due to different product batches, the appearance , which does not affect the use) 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.