This product is a wireless momentary(inching) switch. Users can add the device to the APP in order to remotely control connected home appliances or power circuits. Note:The relays are switches without output, the power supply input (DC) just for the PCBA. In inching mode, you can have two wiring ways to select: -Turn on 0.7s and then auto-off /Turn off 0.7s and then auto-on. The product enables remote control of home appliances through the APP , available on both Android and iOS. Supported functions include: *Remote turn on/off *Timing Schedules *Device Sharing *Group Management *Works with Amazon Echo, Echo Dot, Amazon Tap *Works with Google Home *Works with IFTTT This product is compatible with Amazon Alexa. You can ask Alexa to control the device with the following voice commands. Try out these phrases ( {deviceName} should be the name of your device): Alexa, turn on {deviceName} Alexa, turn off {deviceName} Alexa, schalte Ger?tename ein Alexa, schalte Ger?tename aus Also you can ask Google Home to control the device with the following voice commands. hey, google, turn on {deviceName} OK, google, turn off {deviceName} How to works with IFTTT: Search Smart life in IFTTT APP.