Guard against intruders with this gate, door, barn door, shed door etc. entry alarm. The alarm sounds with a high-pitched tone when a door is opened and the alarms magnetic sensors are separated. Entering a password on the keypad protects against alarm deactivation. A "BYPASS" button allows for entry without sounding the alarm. The housing is weather resistant for indoor and outdoor use. Requires a 9V battery (not included). One-year warranty.