Fixed temperature alarms have a tendency to activate at approximately 58°C (136°f). Rate of Rise alarms, which as the name implies, quantify fluctuations in temperature as opposed to absolute temperature, are not generally suggested for domestic use as the alert security from kettles and the warmth from opened oven doors can trigger them.
That Alarm Should I Use?
Both slow and fast burning fires are both common, and since it is impossible to know which might strike it’s recommended that a mixture of both kind of smoke alarm is used.
Growing in popularity, interconnected alarms which may use a combo of Ionisation, optical, heat as well as CO2 alarms, are all linked in one unified system. In the event that one of those units detects fire it will send a signal via radio frequency to all the other units, which will sound concurrently. This system clearly comes into its own in larger dwellings where individual alarms in the affected region may not be discovered and where people in different areas are not triggered until the fire has really taken hold.
In the event that the wiring is affected by the fire, or even if the fire occurs because of an electrical fault, the battery backup keeps both warning and detection capability. Examples of the type of alarm are the Firex 4870 and Aico EI161RC.
Strobe light and vibrating pad alerts are also available for homeowners who have diminished hearing or as a complement to existing alarms providing warning of fire using means aside from sound. Whatever kind of alarm you chose be sure that it gets the British Standard Kitemark. The Firex and Aico smoke alarms listed above all conform to the standard.
Fitting and Keeping your Fire Alarms