Intruder Alarms

Glossary of Terms


Control Panel. The heart or brains of the system. All of the detection devices are connected to the Control Panel. The control panel can be situated in a remote location such as the attic or utility room. It is connected to the electricity supply and also has a standby battery to operate the system in the event of a mains failure.

Keypad. The keypad is used to arm and disarm the alarm system.For convenience the keypad is often situated in the hallway beside the front door for ease of access. Keypads can also be fitted at the back door or in the bedroom, if required.

Detection devices. There are many types of detection devices available but they all function the same,alert the control panel of an intrusion. Here is a short description of each type.

Magnetic Contact. A device used to detect the opening of a door or window. Surface or flush options are available and available in white or brown. Extensively used in alarm systems due to their reliability and simplicity.

Passive Infra Red. (PIR) An electronic device designed to detect changes in infra red energy e.g. by the movement of a person. Very popular device for domestic and commercial alarm installations.

Internal Sounder. Installed internally in the protected premises. Designed to emit a loud audible noise in the event of an alarm activation.

External Sounder/Bell Box. Installed externally on the protected premises, as high as possible to prevent tampering with the device. Designed to emit a loud audible noise in the event of an alarm activation.A flashing strobe light is also incorporated in the bell box to give a visual indication of an alarm. Can be configured to continue flashing after the sounder has stopped

Communicator. There are many types of Communicators available to alert an individual ,via a standard telephone line, or through the GSM network, of an alarm activation.