The simplest home security sensor system you will ever use! GE Magnetic Indoor Window Alarms let you know any time a door or window in your house is opened. These easy to install alarms require no wiring and have 4 LR44 batteries included, so they can be used right away. Simply stick these to any window that opens and feel secure knowing that your home will alert you when needed.
- Sounds Alarm When Door Or Window Opens.
- Easy To Install no Wiring Needed.
- Off/chime/alarm Switch Selection.
- For Indoor Use Only.
- Includes 1 Lr44 Battery For Each Alarm.