Home Assistant (HA) is a free open source home automation software. You can integrate it with countless devices and services. We install it together with Node-RED and Mosquitto
The popular smart switch Sonoff Basic from ITEAD has recently become available in a new version. The Sonoff Basic R3 is the successor of the trusted Sonoff Basic
The Sonoff S20 WiFi Smart Socket is a switch that you can control with your smartphone. This can be done locally via your own wireless network and worldwide