ctive alerting device for home, office, dorm, hotel or motel, Krown’s Door Knocker 125 can be placed above any door and its ultra bright LED indicator will flash repeatedly alerting you someone is knocking. A convenient travel companion, the Door Knocker 125 is small enough for purse or carry-on, and versatile enough to substitute as a high powered flashlight. Door Signalers, Notification Alerts.
