Description: When one button start up, any other button will automatic locking. After the module is powered off, the set mode will not change. Use 433M wirless remoto control or intelligent wireless control. Via phone App to achieve distance control for infinity far. Controllable lines for AC 85V-265V. Specification: Material: FR4 Fiberglass Board Size: Approx. 115x90x40mm / 4.53x3.54x1.57inch Control mode: WIFI via phone APP remote control / button manual control / 433M wireless remote control (including remote control) Transmission mode: WIFI communication (the control module can connected to wifi, also can support mobile phone 2G, 3G, 4G network signal control and you will learn 433M remote control for wireless remote control) Working Voltage: AC 85V-265V power supply and 4-road active 220V input Control distance: Infinity Maximum output control current: 10A Terminal platform: Android / IOS Working temperature: 0-60 degrees Package Includes: 1 Piece 220V 4-Road Mobile Phone Remote Switch Module 1 Piece 4-Key 433M Wireless black metal remote control Note: Product Matching Process: 1. Mobile phone search '' E-WeLink " and download this APP software. 2. Install the APP software. 3. Use your phone number to register the APP software account. 4. After the registration, you can log in the software. 5. Press and hold the controller S1-S4 any button for about 5 seconds, the indicator light will fast flashing 3 times and brighten 1 time; Then release the button, log in the software and select '' Add the device ''; Continuously click on the next step, the device will ask you the choice of light flash mode, please select the lights flash the same way (fast flashing 3 times and brighten 1 time); Output wifi name and password; (please enter your Home WIFI name and password, click Next until pairing succeeds). 6. Automatically add the finished, name your device, click Complete. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.