As such, a good device, its installation easy and its programming is me personally was not difficult. For the price one gets but a nice thermostat, which offers the ability to control heating not only for ACTUAL temperature but also by time. However, it is not possible to integrate the unit into an existing switch range that would be highly desirable. But, but, but ... The first thermostat was broken after just 2 years: the touch panel stopped responding. The second time occurred a similar problem with the touch panel after not even 2 months. Quality is something else.