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Works fine. You better call an electrician for installation. You need to buy a box for fitting it, unless you already have the necessary space behind you existing thermostat. Works with Google assistant and Alexa. It is a 213 model. You can connect it with smart life app. Beware, this cannot connect with mi home. You need model 123 for mijia app. Looks nice. No flaws so far. Very good price for the value. Highly recommended.
Tested and working with european 3 wire central heating thermostat.
Products as described
Delivered today, still haven't had a chance to test it. However, QC in the factory in which this thermostat was produced is lackluster. Namely, the large M key could not be pressed all the way and no click could be heard. Upon closer inspection, I found a miniature screw wedged between the key and the PCB, obviously left there during the assembly. After removing the screw, the keys appear to work properly. Left undetected, this could've easily caused a short and possibly malfunction of the unit.