WiFi Wireless Inching Relay Monentary/Self-locking Switch Module DIY Remote Control DC 5-32V AC90-260V Ewelink App iOS/Andriod Compatible With Google home IFTTT 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 iOS. Supported functions include: Remote turn on/off *Timing Schedules Device Sharing Group Management Compatible with , , Amazon Tap Works with Google Home, Works with IFTTT type:B Colour:As shown :PC+Metal Package Contents: 1 x RF433 Relay Module Only the above package content, other products are not included. Note: Light 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.