Digital Communicator
As the bells only, with the addition of a digital communicator which signals down the phone line to a central station, that is manned 24 hours. The central station staff in turn verify the call and then contact the Police and your nominated key-holders.

Redcare
As the digital communicator but the telephone line is monitored by the central station, if the telephone line is cut, the Police can be informed.

EAS - Electronic Article Surveillance
A radio frequency system designed to combat retail theft.

Passive Infra Red (PIR) A movement detector which is normally installed in the main rooms of a premises, it cannot see through glass, and has a coverage of up to 15 metres. PIR's are not suitable for rooms where pets are kept.

Inertia Sensor
A vibration detector, installed on door/window frames, it can detect a break-in attempt before the window/door is broken. A suitable sensor for protecting a room in which a pet is kept.

Dual Technology Detectors (D/T) As PIR with the addition of microwave detection, used in conservatories, warehouses or anywhere where the environment is cold, hot or subject to drafts.

Panic Button
A Button that if pushed will activate the alarm, in a set or un-set state, usually installed adjacent to the front door, or in the bedroom.