Main Features: 1.Two-in-one device for wireless scene and dimmer switch:A new idea for ZigBee scene switch to create smart scenes for your Tuya smart devices in Smart Life App;Tap-to-run to get another easier control for all tuya smart devices with simple operations on the switch. 2.Wireless control for ZigBee dimmer lamp under remote mode:Add the smart knob switch into Tuya smart ZigBee gateway and then add smart ZigBee lamp bulb under the remote dimmer interface in App for wireless remote control to your lamp.(Note:Only ZigBee lamp can be added for control) 3.Pair with Tuya ZigBee gateway:Tuya ZigBee gateway is a must for this rotary scene switch,which is a bridge for all ZigBee smart devices under Tuya Smart APP for normal use. 4.Four operations under remote mode to meet different demands:Single press to ON/OFF the bulb,rotate to normal dimmer,press and rotate to set the color temperature,and long press more than 3 seconds to set color,which clarifies the real-sense of value for money with this mini excellent device. 5.Create multiple intelligent scenes for Tuya smart devices in App under scenario mode:To create any smart automation as you want on your smart phone app to start your another intelligent lifestyle,no more voice needed,no more time to open your app,only simple operation required to trigger the scenes you have set,when you are tired from one-day work,such as home mode,shower mode or sleep mode. Specifications: Color: black+gray Material: flame retardant PC Power supply: Battery CR2032 3V DC(the battery is not included in the package ) Communication: Zigbee 3.0 Bluetooth Low Energy Control distance: 50m open area Dimensions: 40 X 40 X 29mm Operating temperature: -10 C~45 C Working Humidity: Less than 90%RH Life of battery: 1 years (General use) Package Contents: 2 x Smart Knob Switch Only the above package content, other products are not included. Note: Light 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.