I bought the universal thermostat due to the good reviews and I am so far impressed! I'm not a techie, but even for me it is very easy to use. It works accurately and reliably. Decisive for the purchase of this equipment was that the temperature settings are saved. The thermostat is used about once or twice a week: simply interpose between the socket and the terminal and have it work without having the minimum or maximum temperature of the room must be set every time!