Description: COVERAGE; 105° Scanning Range ensures a large area is covered. It can be used for doorways, sheds, caravans, garages EASY INSTALLATION; Because of the battery operation there are no wires. Just an adjustable wall mount, which is included WIRELESS; Alarm powered by 4 x AA batteries or 6V DC power adapter (not included). The remotes are powered by batteries (included) LOUD ALARM; 105dB alarm REMOTE CONTROLS; The alarm comes with small, portable remote controls on key chains. These are used to arm/ disarm the alarm .