The thermostat is now replaced a mechanical Eberle and works excellent. The value for money is unbeatable and it looks good on the wall. What can be improved, is the included manual. By simply measuring but is clear that L is switched through on L1 (to the consumer) and the switch is not potential-free. It would be nice also (for the pump), a terminal to which is applied if the power is L, regardless of the relay status (ie, whether the thermostat heats or not) Apart from that I have not managed to disable unneeded switching times. I use the 5 + 2 program, which I have on weekdays and weekends respectively setting a daytime temperature and night setback. The whole I have entered twice, because it was not possible to disable the remaining unneeded switching times. Potentially, you can from 00:00 this alternative - can be switched 00:00, I will still try. Otherwise, the thermostat is excellent and I would buy it immediately.