So, i have a OWL CM130 wireless energy monitor for keeping an eye on power consumption at home.
It’s a great little gadget, but also a very cheap one: i bought it a few years ago for around 30€ in eBay, but it won’t let me do anything with the data, other than display it.
These usually work in 433MHz band, and i happen to have a 433MHz AM receiver similar to this one:
And this is the pinout:
So, i thought “This is a no brainer”!