Doberman Security SE-0119A Wireless Door Alarm with 2 Remote Controls (Silver/Black) MAGNETIC TRIGGER TECHNOLOGY - 100 dB alarm alerts you of potential break-ins and when someone enters the door of a house/room or office Alarm can be programmed for use with up to 5 remote controls, operation range +/- 32ft STURDY, COMPACT DESIGN - Detects entry and fits on any door or window - perfect for home, office, dorm room, garage or even RVs EASY INSTALLATION - Simply peel and stick, no tools needed. Warning sticker is included. o Main Unit : Requires 3 x AAA batteries (Not Included) o Remote Control: 1 x CR2032 battery (Included)