This product is a wireless switch that supports inching/self-locking mode/interlocking mode. Users can add devices to Zigbee Hub in APP Smart life to remotely control connected home appliances or devices. In self-locking mode, patrons can remotely turn on/off connected devices instantly. In jog mode, the default jog time is 0.5s, and the switch be turned on and off immediately after 0.5s. In interlock mode, if switch 1 is opened, switch 2 is closed, and if switch 1 is closed, switch 2 be open. No matter where you are, you only need to download an APP to connect Zigbee devices and control them in the cloud. Please note!!!! This smart ZigBee device must be used with a gateway that supports the ZigBee protocol. It cannot be used without a ZigBee smart gateway. (not included) In mode, you can use the RF433 remote control to control the development board. Note: Please make sure you choose the correct model before purchasing Input voltage:AC 85-250V, Micro-USB 5V input Maximum