We use these devices as they are, without additional devices or similar. the set of the first device took about 10 minutes. Each take more including from the package insert batteries and adjust and assembly without tools within 3 minutes. The functions are well described. I only had to adjust the temperatures subsequently, so that the room is heated accordingly. The only drawback to the description is the offset of the temperature. To mind how it works here has not yet become clear to me, so I just changed the set temperature. They work perfectly so far, all the rooms are equally warm, to which the device actually can not react despite the outside temperature fluctuations. My oldest is only every 2 weeks to visit, so we regularly use the holiday function. Easy to set up and when she's back, it's warm, as wanted. Very good solved.
A negative point however is the Parental Control, who regularly turns off the youngest and then adjust the slider. He must be removed too easily. She is 23 months old and looks the buttons, so it only plays and he's out. The thermostats do not display the actual temperature, that would be another shortcoming.
