Fool-type wifi control module, no need to , only need to download an APP, link WIFI to control the built-in cloud. As long as the module is connected to WIFI, the mobile phone can be controlled anywhere in the country.Default inching function: press the phone to open the relay, immediately disconnect the pull (default 1 second), and has a time-sharing functionWhen the light is on, press the jog lock button to self-lock. Press the open relay to pull in, press the relay to cut off.Working mode: This product is a wireless switch supports momentary(inching) /self-locking/interlock work modes. Users can add the device to the APP eWeLink in order to remotely control connected or power circuits.Note:The relays are switches without output, the power supply input (AC/DC) just for the PCBA.Tap the work mode setting button manually, the product can change the working mode.When in inching mode, you can have two wiring ways to select: -Turn on 1s and then auto-off -Turn off 1s and then auto-on.When in self-locking mode, you can remotely turn on/off connected devices immediately.When in interlock mode(only 2- and 4- supports), you can remote control AC/DC motors.The product enables remote control of through the mobile application eWeLink, available on both Android and for iOS.Working voltage: USB 5V/DC7-48VWith signal indicator light and relay pull-in indicator lightPower: Less than 1WQuiescent current: 80mAMaximum current: Less than 10AMaximum voltage: Less than 25010A relay modeThe life of the relay model has exceeded 100,000 Insulation resistance: 100Maximum pulling time: 15mMaximum release time: 5mWorking temperature: -40~70Working humidity: 40%~80%RHtype: Smart Wifi Switchcolor:Green+black+blueMaterial:PCB+electronic componentsPackage Contents:1 x Smart Wifi SwitchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.