Use for1.Remotely give a pulse signal to turn on and turn off Lights,Lamps PC and other home appliance.2.Remotely give a pulse signal to turn on and turn off Garage Door,Door Access,Slide Door3.Remotely give a pulse signal to control DC Motor,AC Motor to Forward and reverseDry Contact Passive OutputNo matter the power you supply in the input, the output don't have any voltageIf you do not supply power in output port,it don't have any power, the connectted home appliance can't work, you also need to supply power in output.2 Channel Wifi Relay OverviewThree Working Mode1.Inching mode :Switch on one channel,the channel will be automatically closed after 0.5 seconds .Other channel is same as the channel.The default inching time in inching mode is 0.5 seconds.You also can change the inching mode in APP. The inching time only available in the interlocking mode or selflocking mode.2.Selflocking mode :each channel could be turn on or turn off seperately.You can turn on or turn off all channel at the same time.3.Interlocking mode :Switch on any channel , other channels will be switched off automatically .If you need to change the mode,you can press the mode button or active other working mode in app.How to Change the Inching TimeIf you need to change the inching time of 1 channel module, you only can enable the inching time in APP.If you need to change the inching time of 2 channel module.You can press the mode button to enter into selflocking mode or interlocking mode,so you can change the inching time on the APP.The inching time only available in the selflocking mode or interlocking mode.The time range is 0.53600 seconds.Features:Two Input PortsYou could choose USB 5V port or the screw terminal port to supply power in the input to make the pcb board board work.Dry ContactPassive OutputNo matter the power you supply in the input, the output don't have any voltageIf you do not supply power in output port, the connectted home appliance can't work, you also need to supply power in output.TimerThe connectted home appliances can be automatically turned onoff according to the time schedule.Each channel can set different time schedule.Different Ways to Control the WIFI ModuleAPP Remote ControlYou can control the connectted home appliance in Tuya or smart life APP anywhere and anytime.Such as light, electric kettle, electric rice cooker, electric curtain, etc.RF433 Remote ControlThe wifi relay can be control by RF433 remote controller.Mobile Phone ControlWhen you go outside or at home,you could control the device in your smart phone by 4G Mobile Network or WIFI(Note:The router need to online and the WIFI module need to keep a close distance with the router)Voice ControlCompatible with Alexa and Google Assistant, you can use the voice control to turn it onoff the connectted home appliances .Share ControlOne device can control by Multiple phones,you can share the wifi module with your famGroup Controlone phone can control Multiple smart device.You can add the wifi module and other smart device in a group,and then turn onoff all smart device in the same time.Note before Order, please test compatibilityPlease check if your garage controller is compatible with our module.Take a wire with both ends stripped or a straightenedout paper clip to shortcircuit the wall button terminal on the opener (I marked with red color). If the garage door opens or closes, it can work with our smart controller.Garage door opener controller features:WiFi Smart Garage Door Controller and Garage Open Close Monitor Compatible With Alexa Echo , Google Home voice control No Hub RequireREMOTE MONITORING: You can open or close the door by the APP. You can check the garage door open or closed state in real time. You can authorize multiple people to access your garage.EASY TO USE: Instantly control the garage door by tapping the app on your smartphone. Just connect the smart opener to the 2.4G WiFi network.VOICE CONTROL: You can activate your garage door opener by placing a voice command to your Alexa or Google Assistant device or driving near the garage doorWIDE COMPATIBILITY: You can only use one controller per garage door opener. Compatible with most general garage door openers.Please check the our list.TIMER FUNCTION: You can set schedules to open and close your garage door. Quick & easy installation as well without the need of a professional. No Hidden MonCOUNTDONW FUNCTION: You can set the countdown time to close or open the garage door.EASY ADD DEVICE:1.The garage door will be activated when added successfully (when the blue LED light stop blinking), so keep your door closed first.Power up the garage, and the ren light and blue light flash alternatively.2. Launch "TuyaSmart Life"APP. Tap the icon '+' o