Serves halt for window and door monitoring and recognizes the following states: open, closed, open, closed. Adjusts the heating of the room when opening to a fixed temperature you down, and you can also specify which opening time for the procedure is necessary. For example, will not be lowered for a look in the mailbox, the heating in the hallway. Along with smoke alarms you can trigger night or in your absence for any breach of the window contact and can optionally send an eMail. But you can send an SMS or mail Also when leaving the house, somewhere when another window is open (presence / absence switch at the front door which is a state variable in the Smart Home software switches).