GE SMARTHOME SH50246 DoorJamb Alarm

120 DB ALARM SOUNDS WHEN ACTIVATED; ON/OFF SWITCH ACTIVATES & DEACTIVATES ALARM; ALSO WORKS AS A DOORJAMB TO PREVENT DOOR ;FROM OPENING; EASY TO INSTALL & COMPACT ;FOR TRAVEL; ALARM DEACTIVATES WHEN PRESSURE ;IS RELEASED FROM DOOR STOP PLATE; FOR INDOOR USE ONLY; LOW-BATTERY INDICATOR LIGHT; REQUIRES 9V BATTERY SUBCATEGORY2: HOME/OFFICE OBSERVATION.