Fire alarm system
Manual call point
A Manual Call Point or Break Glass Call Point is a device which enables personnel to raise the alarm by breaking the frangible element on the fascia; this then triggers the alarm.
They are used to allow building occupants to signal that a fire or other emergency exists within the building. They are usually connected to a central fire alarm panel which is in turn connected to an alarm system in the building.
Manual call points are used to initiate an alarm signal, and operate by means of a simple button press or when glass is broken revealing a button. They can form part of a manual alarm system or an automatic alarm system. There will be an indicator on the monitoring unit for visual indication to locate the call point easily.
Conventional fire alarm system
A conventional system employs one or more initiating circuits, connected to sensors (initiating devices) wired in parallel. These sensors are devised to decrease the circuits resistance when the environmental influence on any sensor exceeds a predetermined threshold.
- Ideal alarm system for small set-ups
- Identifies the zone in which the fire incidence has occurred
- A technological advantage over standalone detectors
- Detection devices are designed to detect actual fire instances only, decreasing the chances of fire alarms
- One of the most cost effective
- Simple setup, no configuration required
Addressable fire alarm system
- Heat detectors
- Smoke detectors
- Manual pull stations
- Sprinkler system inputs
- Standard pressure and flow control switches
Output devices on an addressable system
- Audible warning relays
- Door control relays
- Auxiliary function control
These components of an addressable fire alarm system control a range of functions including:
- Opening or closing doors
- Turning fans off or on
- Activating notification appliances
- Initiating fire suppression systems
- Elevators recall to the designated floor
- activating or communicating with additional fire alarm control panels