Strobe 72-5300 Strobe Complete Wireless Security System Includes lightweight remote panic alarm that can be attached to key chain or worn around the neck Complete system includes one motion detector with alarm and flashing light, two remote controls Two glass break sensors and/or magnetic contacts, one external siren with alarm and flashing light One panic remote with neck cord, two alarm system warning decals, and adjustable mounting brackets and screws Total system requires four 9-volt batteries and eight AA batteries (not included)