Intelligent Knob Buttons and Knob Switches are optional for life applications in various scenarios Smart Knob Scene Switch Intelligently control the device after connecting the device to the Zigbee hub, Tuya Zigbee hub needs much higher compatibility with Zigbee devices than other hubs Scene mode and remote mode functions Graffiti Smart Scenes in Smart Apps by Creating Trigger Routines Intelligent control of Zigbee bulbs in remote mode Single Press Zigbee bulb on/off Change your app to remote mode to control Zigbee bulbs Rotate Dimming in remote mode Product Name: Smart Knob Scenario Panel Built-in battery: CR2032 Working voltage: DC3V Working current: standby current ≤ 5μA/maximum current ≤ 10mA Wireless protocol: zigbee3.0 Wireless transmission distance: open range ≥ 30m Colour:White Material:plastic Package Contents: 2 x Smart Knob Button 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.