Ei184 Low Voltage Heat Alarm

The Ei184 is a Heat Alarm designed to connect to a panel for its low voltage power supply (10.5 – 30V DC).  This Alarm is fitted with volt free contacts that can be used to switch an external device.  It is best suited for kitchens and garages.

  • Fast acting class A1 thermistor
  • 10.5-30V DC supply with 9V alkaline battery back up
  • 1 Volt-free contact output (No/NC)
  • Hardwire interconnect
  • Test/Hush button
  • Integrated piezoelectric sounder

BS 5446-2:2003

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The Ei184 Heat Alarm is designed to connect to a panel for its low voltage power supply (10.5-30V DC) but also as a trigger via a built in relay.  The 9V replaceable alkaline back-up battery will ensure continuous operation (up to a year) in the event of power failure under normal operation.

When a high temperature is detected ( 58°C ± 4°C), the horn will sound and the relay will switch.   The relay can be set up as Pulse or Continuous mode of operation.  When supplied, it is set to Continuous (ie the relay  switches as long as the detector is in alarm).  If Pulse mode is selected, the relay switches for 5 seconds only when the detectors goes into alarm.

The Ei184 can be hardwire interconnected  to other Ei low voltage Alarms from the same range.  In an interconnected system, an Alarm sensing fire will cause all others to alarm and switch contact (depending on installation configuration).  Up to 20 Alarms from the Ei180 series can be interconnected.  

The Alarm is supplied with a low voltage base with an Easi-fit connection to facilitate simple detector head removal and replacement.  The base automatically connects both the low voltage power supply and battery as the detector head slides on.

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

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

Sensor:Thermistor (Class A1 Detection - trigger temperature 58°C ± 4°C)
Product life:10 years
Supply voltage:10.5-30V DC
Battery Back-up:9V Alkaline Battery (replaceable)
Relay contacts:
30V, 1A resistive, NO/NC
Continuous or Pulse mode
Interconnection:via Hardwire
Sound level:85 dB(A) at 3 meters
Button Test:Checks sensor, electronics, horn and relay contacts operation
Visual indicators:
Green LED: Power
Red LED:  Self-check, alarm & hush
Normal Operating and Storage Temperature: 
-10°C to 40°C
Normal Operating and Storage Humidity Range: 15% to 95% relative humidity
Plastic material:UL94 V-0 flame retardant
Fixing:Screw fixing and mounting plate supplied
Product: 145mm x 60mm
Packaged: 155mm x 155mm x 88mm
Product: 363g
 Product + packaging: 390g
Warranty:5 years

Product Manual

Product Datasheet