This portable, battery-operated Door Knock Beacon is great for travel and one room situations such as a hotel room, dorm room, office, or studio apartment.

It is activated by vibration and flashes a bright light for several seconds after a knock. It also has an adjustable sensitivity switch.

Easy installation with door hanging bracket/hook or velcro strip (included).

NOTE: This model has been upgrade from its predecessor, the DB9, the DB10 features a brighter LED to alert you faster.

Great for homes, Hotel rooms, apartments, college dorm rooms or bedrooms - anywhere it is important to know that someone is knocking on your door. The DB10 is an affordable solution and easily moveable.