Description:   This wireless smart switch is a zb version, which needs to be used with a zb gateway for multiple application scenarios.      The wireless smart switch is a ZB version of the switch button. It has three key states: single click, double click, long press. It can be used in a wide range of scenarios and can be used as an SOS button, wireless switch or doorbell.      Button panel:   Single click function: short press for one second;  Double-click function: press twice in succession;  Long press function: long press for three seconds;  Reset function: long press for ten seconds,  USB: Please choose a 5V===1A adapter to connect to this product.  LED: blue status indicator light; red charging indicator light.    Feature points:  1. The appearance is small and can be placed at will;  2. ZB connection needs to be used with a gateway;  3. Customized settings of three key functions to create smart scenes;  4. The connection method is simple.    Specifications:   Working temperature: -20°C~70°C;   Working humidity: <85%RH;   Battery capacity: 3.7V 450mAh;   Charging interface: USB DC5V 1A;   Connection method: ZB;   Product size: 56*59*18.5mm.      Package included:  1 x Wireless smart switch,  1 x USB power cord,  1 x Manual,  1 x Double-sided tape.