Sonoff WiFi Switch is a great and cheap IOT device. But the 5$ device can do a lot more. By adding I2C, you can connect a whole range of sensors.
![[NEEDS UPDATING] Home Automation Dashboard (HAD)](https://i.pinimg.com/originals/57/8a/33/578a33eac48c358c2470ca2e00eeafe0.jpg)
