Features: Type 1.Working voltage:7-32V Type 2.Working voltage:7-32V Support 433MHz RF Type 3.Working voltage:7-32V Support 433MHz RF (Includes remote control without battery) *With signal instruction light and relay pull-on instruction ligh *Power Overview This product is a wireless switch supports inching /self-locking mode. Users can add the device to the APP in order to remotely control connected home appliances or devices. In self-locking mode, customers can remotely turn on/off connected devices immediately. When in inching mode, customers can have two wiring ways to select: * Turn on 1s and then auto-off * Turn off 1s and then auto-on. The product enables remote control of home appliances through the mobile application eWeLink, available on both Android and iOS. Overview This product works with Amazon Alexa. You can ask Alexa to control the device with the following voice commands. Please note that only US/UK English and German voice commands are supported now. Try out these phrases ( {deviceName} should be the name of your device): Alexa, turn on {deviceName} Alexa, turn off {deviceName} Alexa, turn {deviceName} off Alexa, turn {deviceName} on Alexa, schalte Gertename ein Alexa, schalte Gertename aus 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, Google Nest Works with IFTTT Note: we have change the WiFi module from PSA to PSF recently. PSF is more powerful. Works With Amazon Alexa This product works with Amazon Alexa. You can ask Alexa to control the device with the following voice commands. Please note that only US/UK English and German voice commands are supported now. Try out these phrases ( {deviceName} should be the name of your device): Alexa, turn on {deviceName} Alexa, turn off {deviceName} Alexa, turn {deviceName} off Alexa, turn {deviceName} on Alexa, schalte Gertename ein Alexa, schalte Gertename aus