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Streetwise PRO-TEC-DOOR Alarm Door Jammer
Streetwise PRO-TEC-DOOR Alarm
List Price: $12.95
Our Price: $12.95
Sale Price: $10.95
Savings: $2.00
Door Jammer
List Price: $44.95
Our Price: $44.95
Sale Price: $34.95
Savings: $10.00
Transforms an ordinary door knob into a highly sensitive burglar alarm. This device utilizes dual-sensing technology to enable it to protect both metal & wooden doors.

Important: as you can see in the pictures there needs to be a small space (about 1/8") below the door for the base of the DoorJammer to slide under. This space is normally found under interior doors but not under all exterior doors.

The Greater the Force of the Attempted Entry, the Stronger it Holds

The horizontal force being exerted on the door from the outside is converted into a vertical force to anchor the DoorJammer firmly into the ground. Not only does this prevent the door from moving horizontally, it also forces the door upward, increasing the DoorJammer's grip and reducing the chances of its foot slipping on the floor.