Alarm Systems

Barrier Surveillance Ltd only use components and cable to British and European standardscctv-pic3

Basically there are two sorts of alarm system audible which means bells only and a monitored alarm system this means if the system is activated a single in sent immediately to the monitoring station.

A typical design for a domestic house alarm system would be:

  • Ground floor external doors fitted with door contacts flush or surface type
  • PIR (Passive infrareds) fitted in kitchen, dining room, living room, and top of landing
  • Internal sounder (can be programmed with door chime) fitted near to keypad next entry exit door
  • External SAB self activating bell box with sounder and strobe fitted to exterior wall
  • Conservatory fitted with break glass detector
  • 12 hour 12volt battery backup

alarm-systems-pic3Extra devices can also be incorporated into the system such as smoke detector, panic attack button, extra keypad, and bell box if required.

A typical house alarm control panel would be programmed up with a full set which arms every device or zones on exit and a night set which would only alarm the perimeter devices or zones and possibly specified PIR as agreed with customer. If the customer had a pet or pets there is provision on the control panel to disarm specified devices or zones to eliminate this type of scenario.

A typical design for a commercial intruder alarm system would be:

  • External doors fitted with heavy duty door contacts
  • Loading bays fitted with heavy duty roller shutter contacts
  • Internal offices and work areas fitted with dual tech PIR
  • Exterior wall fitted with SAB self activating bell box with sounder and strobe
  • 12 hour 12 volt battery backup
  • Various options of setting and un-setting alarm system
  • Internal sounder (can be programmed with door chime)
  • Redcare / GSM unit (intruder alarm system monitoring device)
  • Panic attack button
  • Fire alarm system incorporated into intruder alarm system (this includes monitoring of the fire alarm system)
  • 4 hour response for call outs and 24 hour coverage 365 days a year (monitored sites only)

Commercial intruder alarms are far more complex than domestic systems due to the fact that more people have access to the system 


but the system can still be programmed for different access levels that limit people to certain areas of the building and only letting authorised people to set the alarm system.