This product is a wireless switch that supports inching/self-locking mode/ mode. Users can add devices to Zigbee Hub in APP Smart life to remotely control connected 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 will 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 will 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 RF mode, you can use the RF433 remote control to control the development board. Note: Please make you choose the correct model before purchasing Input voltage:AC 85-250V, -USB 5V input Maximum current:2200W/10A/group, 16A/total Zigbee standard:Zigbee 3.0 Relay Model lifespan 1,000,00 Default inching function:press to open the relay with a mobile phone, and then cut off the suction immediately. When it is on, press the jog lock button to lock itself. Press the open relay to pull in, press the close relay to disconnect. Due to different batches, there may be differences in product appearance, color, and text, which will not affect the use Colour:White Material:plastic Package Contents: 1 * Module with Case 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.