Features: *High Quality Material: The smart wireless button is made of high quality material, durable and not easy to break, can use for a long time. *Apps or voice control: Through this smart wireless button, you can wirelessly control multiple home appliances, making your life more convenient. *Smart Home: Wirelessly control your smarts home, create various smart scenes, and link with any Zigbee smart device you like. *Two ways to use: One click to power on the ZigBee bulb, Double click to leave mode: Double click the knob button to turn off all lights, airs conditioners, fans and other electronic devices before going to work. *Smart Controller Scene Switch: After connecting to most Zigbee Hub to intelligently control devices, Zigbee hub requires its compatibility with Zigbee devices to be higher than other hub. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: ABS Size: 50*50mm Power supply method: CR2032 3V battery Size: 50*50mm Control range: 25m open area Working temperature: -10°C45°C Working humidity: Communications: Zigbee 3.0 Note: This product can only be used when connected to a Zigbee gateways. The smart link is only for normal use by Zigbee smart devices and cannot be used alone without Zigbee smart devices. Package List: 1/2/3/4pcs x Smart Wireless Buttons