Danfoss Eco 2 - Install and Thoughts

Needed to replace a few radiator thermostats, so why not go with something electronic and slightly smart. I decided on the Danfoss Eco 2 - an electronic thermostat with Bluetooth capabilities, App controlled, but not entirely smart home enabled, but not far off either, and much cheaper than it's big brother the Danfoss Ally. In fact the protocol these Ecos uses have been decoded, and the source code for an example project communicating with them is available here: https://github.com/dsltip/Danfoss-BLE - so making the controllable by an ESP32 or Raspberry Pi for home automation doesn't seem that difficult.