wedge-shaped design and non-skid pad on the bottom of unit prevent door from opening
use it when you are out, when you are alone, or when you are traveling
good for dormitory rooms and hotel rooms
no installation required
requires 1pc 6F229V battery (included)
if an intruder attempts to open the door, the wedge-shaped design and non-skip pad on the bottom of the unit will prevent it from opening and activate a alarm, which will scare off the would-be intruder and alert you to the attempted entry.