I was looking for a cheap offtheself sensor (battery powered) to add them around my house and dump data into a database.
This things costs around 5€ in aliexpress, i cant wrap my head around how can they make them so cheap, the BLE chip alone in digikey costs 4€
Or 10€ from the original store
I guessed & decoded the BLE characteristic this Sensors use to transmit Temperature humidity and battery voltage.
Now im reading 9 of them at the same time with my raspiZero and visualice everything with nodered