Sonoff RFR3 Wi-Fi DIY Smart RF Control Switch makes it possible to control connected devices via the ewe Link directly from your phone, or ask it to turn on and off devices with amazon Alexa and google assistant. Amazingly, it has a DIY mode that is the firmware can be user-defined. Built-in a web server that exposes the REST AP which allows you to connect the switch with your existing home automation system. Compatible with Vera, Fibro, Home Seer, Savant, HomeKit, etc.