I ordered this thermostat which I squinted for several months. The installation (made by me) it was simple, documentation is very well done and with some notions while electricity is very easy. It works perfectly, will pilot the simplest way from my iPhone and more beautiful it is. Small flat, the announced temperature is slightly higher than the actual temperature (about 0.5 to 1) which in cold weather can be uncomfortable if the heating is stopped before reaching the desired temperature. But until then no worries for me