This is a WiFi Smart Switch with the DIY capability that makes it possible to control connected devices via the eWeLink directly from your phone, or ask it to turn on/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 API, which allows you to connect the switch with your existing home automation system. Compatible with Vera, Fibaro, HomeSeer, Savant, Home Assistant, etc, for the protocol document and the code for the DIY Mode tool (updating), please go to Github on https://github.com/itead/Sonoff_Devices_DIY_Tools
Simply set a timer to let your devices switch on/off automatically at a pre-set time through a day. For example, prepare your coffee maker in the evening, and a cup of coffee is ready for you in the next morning. Compatible with the IFTTT function, and you can make more actions happen to trigger other devices, or receive a notification on your phone once the action was triggered.
Along with support for smart scenes, just set a device to turn on/off to make another or a boatload of devices turn on/off. The LAN control is designed for situations which no available Wi-Fi connection, or an unsteady Wi-Fi network environment. A convenient option that is share control is capable of allowing you to manage the same device with your family or friends together, simply share it on the eWeLink app to try.
Note: SONOFF BASICR3 does NOT have 433Mhz RF receiver module.