Ei144e Heat Alarm

The Ei144e is a mains powered Heat Alarm with a 9V alkaline battery backup.  It is ideally located in the kitchen, utility room, garage or in areas which are not suitable for a Smoke Alarm.  A Heat Alarm should be connected to a Smoke Alarm to ensure early warning.

  • Fast acting thermistor for Class A1 Heat detection
  • Hardwire interconnect
  • Remote Test, Locate and Silence compatible
  • Easi-fit base
  • Easy to use large Test/Hush button
  • Memory feature
  • 5 year guarantee

BS 5446-2:2003

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The Ei144e Heat Alarm is fitted with a fast acting Class A1 sensor to quickly sense heat build-up from fires. Powered by 230V AC with a 9V user replaceable Alkaline battery backup to ensure continuous operation (up to 3 years) in the event of mains failure.

The Alarm is supplied with the "Easi-fit" base to facilitate quick and simple installation, combined with easy detector head removal and replacement. The Easi-fit base automatically connects both mains power and battery as the detector head slides on.

The Ei144e can only be used as part of a fire detection system if interconnected with Ei Electronics mains powered Smoke Alarms. It can be interconnected via hardwire to communicate with compatible Ei Alarms and accessories. Up to 20 devices can be interconnected. Interconnecting the Ei144e with the Ei1529RC enables the user to Locate, Silence and Test the Alarms remotely.

The Alarm automatically monitors the battery every 40 seconds. If it is depleted it will give a short beep every 40 seconds.                                          

The large Test and Hush button allows the user to check the operation of the Alarm. This will check the sounder, battery voltage and internal circuitry.  

The memory feature allows an Alarm that has previously been activated to be easily identified. This is indicated by 2 red led flashes every 40 seconds for 24 hours (after the event).


Sensor Type:Thermistor (trigger temperature 58°C ± 4°C)
Product Life:10 Years
Supply Voltage:230V AC, 50Hz
Battery back-up:9V Alkaline Replaceable
Sound Level:85 dB(A) at 3m
Button Test:Simulates a high temperature to check the thermistor, electronics, and horn
Silence function:Silences alarm for 10 minutes
Visual indicators:
  • Green LED : Power
  • Red LED: Self-check, alarm, hush, memory & fault
Memory feature:2 red flashes every 40s to indicate a previous alarm activation
Normal Operating and Storage Temperature Range:-10°C to 40°C 1
Normal Operating and Storage Humidity Range:15 % to 95 % Relative Humidity (non-condensing)
Plastic material:UL94VO flame retardant
Fixing:Screw fixing and Easi-fit base supplied
  • Product - 148mm x 61mm
  • Package - 182mm x 68mm x 155mm
Weight:320g (Pack + 48g)
Warranty:5 year (limited) warranty


Product Manual

Product Datasheet