Hello   I had a very bad experience with the heat controller last night. One of them is placed in a closed desk at 2nd floor. I have not noticed that the battery level was low yesterday (10%). At beginning of the night, the battery was fully discharged.   In this case, the behaviour of the heat controller seems to be : put in fully open position. This is not a good design choice, and this is very dangerous  : the radiator will heat without any temperature feedback!!. The