[Multiple keys] Each key supports two key events: one click and long press. Each trigger can be bound to a different set of operations. [Intelligent linkage] The wireless double key switch can link the intelligent appliances at home to enable/disable the intelligent appliances at home with one key. [High precision connection] Wireless double key connection has high precision and wide range. [Ultra-low power] Wireless dual-key switch has low power consumption and long battery life. [Easy installation] Wireless double key switch can be attached to the wall or can be directly held for use. Notes: WiFi version switches only support two actions: one click and long click.(2 Gang 4 Scene) This product only supports tuya / smart life APP platform. Other smart home platforms are not supported. Product Name:Wireless Switch(2 Gang) Battery:2 x AAA(not included) Working Temperature: 5-60 Wireless Protocol: 2.4Ghz WiFi Working Humidity: 20%RH-80%RH Working Voltage:DC 3V Colour:White Material:ABS Package Contents: 1 * switch 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.