2 - Pk. U.S. Patrol Watch Dog Door Alarms keep unwanted visitors away! SAVE BIG!
With no special wiring required, this is an inexpensive way to ward off potential threats, all day long. Comes with a piercing siren alarm.
Simply hang the alarms on the inside door handle at home, your hotel room or office entrance, and flip the "on" switch to activate the sensor. Detects not only door handle rattling, but motion within a few inches of the handle.
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