Item Description:1.【Customize Button Actions.】 Smart knob, match the smart scene, open the smart scene with one key. You don't need to click the scene mode on the phone, just click the smart knob to open the smart scene. For example, movie mode turn on the TV, turn off the lights in the living room, close the curtains, turn on the TV ambient light, and turn on the sound. Click the smart knob to do it.2.【 Trigger routines to occur.】 Five opening modes of the smart knob. Single Press, Double Press, Long Press, Rotate Press and Rotate. Five scenarios can be set, one to meet needs is indispensable for you3.【Can control any smart device (Powered by TUYA)】 Control lights, electronics and small appliances from anywhere.4. 【Ultra-low Energy, powered by .】 The can be used for a long time, so there is no need to replace the frequently. No need to wire in.5.【 Without installation.】It can also be placed on the table, pasted on the wall, anywhere within reachProduct name:Smart Knob:CR2032 3V DCCommunication:Zigbee 3.0Working Range:50m Open AreaWorking Temperature:-10°C-45°CWorking Humidity:90%RHLife Cycle1 Years(General use)Dimension404026.5mmPackage Included:1,Smart Knob1,adhesive1,instructionItem Specification:Current: otherFeatures: Material: PlasticItem Type: Switches: 1 yearIs Smart Device: YESSwitch Type: Knob switchZigbee gateway hub: requiredQuantity: 1/2/3/4/5PCSping/: support