@A.Smolinski, ok, I will setup again MS to 12 and do what you asked and test instead of you. If following did not make you consider it is clearly not supposed action from MS.   I had this problem on random, most noticeable during the night, keeping two Hallway and Stairs lights on. It is three hallways, three floor stairs, no radiators, no heating, no movement, no windows ... nothing. Nothing which should keep MS breached two hours along ...   I set them u