Designed with 20-gauge steel to improve security on hinged and sliding doors the Guard Dog DoorKeeper Alarm prevents forceful entry of even the largest intruders. The adjustable system allows the door bar to slide to fit most standard-sized doors and the loud 100 dB alarm will bring notice up to 1,000 feet away. Want to use it on a sliding door? Simply remove the top yolk pin and DoorKeeper is ready for action. Whether at home, school, or the office, the DoorKeeper Alarm keeps what you want out.
Includes a premium multi-height door jammer, removable yoke for sliding patio door use and 100db vibration sensitive alert
High sensitive alarm will deter an intruder and alert you up to 1000 ft away in the event of an unwelcome entry attempt to your home
Adjusts from 25 in (63.5 cm) to 41.5 in (105.4 cm) with 40 different positions to adjust most hinged and sliding doors
Angled and squared rubber bottom assures full contact and strong grip on all types of floors without scratching them