The most likely approach of forced entry into an office or home is via a door or window. That’s why it’s so important to have contact sensing units connected to the windows and doors on your home – at least on the ground floor. These magnetic sensing units can discover whenever a window or door is opened. If the alarm is armed, it’ll be triggered – setting off the siren and, when it comes to the S02/GSM system will call a sequence of designated numbers up until somebody chooses up. Each set of sensors requires one 23A battery.
- Designed to detect a window or door being opened.Totally wireless: interacts from another location with the S02/ GSM main system Connects to any door or window Needs one
- 23A battery