Description

One of the most important things in security and especially in power saving is the open doors and windows. when your H/C system is on and your door or window is open, you are wasting lots of energy. This sensor can prevent this by turning the H/C system off whenever a door or/and window got open. also when you are not at home and someone opens the door or window, you can get notified by your phone, and definitely, the burglar alarm starts the alarm sound. this little multi-purpose device works with batteries and you can check the battery level in the application.