1.This device needs to be connected to a zigbee gateway to work properly, so please make sure you have a gateway. 2.You can set the device status on App after power failure and back on :Default ON, Default OFF, or Remeber the last status before power off. 3.Remote control:You can control the product by the Smart Life APP. Note:This product is a zigbee device with dry contacts, single pole output. Colour:White Material:PC Package Contents: 1 x Smart 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.