The heat alarms - Aico Ei140 and Ei160 RC series
The ionisation alarms have sensors that are sensitive especially to the smoke produced by fast flaming fires.
What is a Heat alarm and where do we use heat alarms?
The Heat Alarms from Aico are not so likely to cause false alarm problems since they are not responsive to any type of smoke or fumes - they are sensitive to heat only. Because of the possibility of having a slower response than the smoke alarms, it is recommended that the heat alarms would be used in a fire alarm system that include smoke alarms also, and all the alarms must be interconnected. The British Standard BS 5839: Part 6: 2004 recommends that the heat alarms should be used in the kitchens; it continues to suggest that they may also be used in the main living room(but they should not be installed in the circulation spaces or areas where fast response to fire is required.
How do the Aico Heat Alarms Work?
A thermistor (a heat sensitive resistor) is sited in the sensor chamber of the alarm.
When the temperature rises, the resistance of the thermistor reduces.
The IC continuously monitors the resistance of the thermistor. When this indicates that the temperature is over 54° C, the IC sends a signal to the sounder circuit.
The alarm sounder then operates - the alarm rings.
The Aico optical alarms
The optical sensors are more responsible to the smouldering fires producing large particle smoke, typical for... read more
The Aico ionisation alarms
The ionisation type sensors are a more sensitive class of sensors to the smoke that is almost invisible to the eye read more
The Aico heat alarms
The heat alarm are less likely to produce false alarms since they are less responsive to fire or smoke and more responsive to the rise of heat... read more
# Ideal for protecting (against fire) kitchens and garages.
# Alkaline battery supplied, already connected.
# Hush button for false alarm control; 5 year guarantee.
# Interconnects with other Ei mains smoke/heat alarms.
# Ideal for protecting areas prone to false alarms.
# Fixed temperature fast response thermistor, 58° ± 4° C
# Hush button for false alarm control;low power cell warning
# Tamper-proof rechargeable Lithium battery back-up.
Ionisation Alarm
Heat Alarms
Optical Alarms