Feacture: [Two Input Ports] You could choose USB 5V port or the screw terminal port to supply power in the input to make the pcb board board work. [Dry Contact/Passive Output] No matter how many power you supply in the input, the output don't have any voltage (Except that the input and output share the same power supply) If you do not supply power in output port, the connectted home appliance can't work, you also need to supply power in output. [Timer] The connectted can be automatically turned on/off according to the time schedule. Each channel can set different time schedule. [APP Remote Control] Require Tuya Zigbee Hub. You can check the working state of the device in Tuya APP anywhere and anytime. [RF433mhz Control] The device can be controlled by the RF433mhz Remote Controller. [Mobile Phone Control] Require Tuya ZigBee Hub ,when you go outside or , your smart phone could control the device by 2.4Ghz WIFI or 2G/3G/4G Mobile Network. [Voice Control] You could voice control the device by for Alexa/for Google Assistant. Note: All of these receivers must have a ZigBee gateway to work with the Tuya App/Smart Life App. Zigbee 1 Channel Relay (Three Working Modes) Use for 1.Remotely give a pulse signal to turn on/off Lights, and other home appliance. 2.Remotely give a pulse signal to turn on/off Garage Door,Door Access 3.Remotely give a pulse signal to control DC Motor,AC Motor to Forward and Reverse The switch is a /self-locking smart switchsupporting ZigBee It can be used as a Zigbee router to help transmit ZigBee signals to a stable connection when using multiple Zigbee devices in your house. Parameters: lnput voltage: DC/AC 7-32V -USB 5V input Max.Current:2200W/10A Wireless standard: 2.4GHz b/g Working temperature: -20~70 size: 72 x 45 x 22mm Material: ABS colour: White Package Contents: 1 x Relay Module 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.