A:AnswerGreat question!
In many situations, the temperature being used as a reference is the thermostat which is usually in another room. This can cause the illusion that it's off by X number of degrees. Most rooms are not the same temperature as the location of the thermostat.
A:AnswerGreat question Lovely1,
The monitor includes a power adapter to charge it so you can take the monitor with you anywhere in the house. It is a wireless monitor.