I found out through trial and error that my current £10 doorbell uses the 433Mhz radio frequency. I simply tried to pair it with my SONOFF RF Bridge box… and it worked to my delight.

Now every time someone rings my physical doorbell I get an instant notification on my phone! Bingo. Who needs an over-priced Ring doorbell system?

Evidently if needs be, I just load up one of my external Yi cameras to see and speak to anyone who triggers the doorbell.

The post How I turned my doorbell into a smart one for £0 appeared first on Adam's Blog.