The door sensor records the number of door openings made, length of opening, cold room and energy loss reduction.
Using a magnet, it detects the opening and closing of a door, window, fridge, furniture, whatever. But there is something magical about it. And it’s not just the very low price point.
Not only does is report the current status (open / close) it also counts:
- How often it was opened
- How long it was kept open