Ideal for homes and offices. Just plug in the supplied 110 volt adapter and turn unit on. Has adjustable sensitivity up to 30 feet away. SureLock Portable Door Lock Provides security and protection for home or office. Superior strength guards against forced entry, door cannot be opened even with a key.
Plastic guard protects door finish.
This alarm will not only activate, but prevent unwanted intruders from entering. If someone attempts to enter, the siren will sound and the unit will wedge underneath the door. The wedge shaped design and non-skid pad on the bottom of the unit will hold the door tighter the harder is it pushed.