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Mains Powered Heat Alarm with Alkaline Back-up Battery - Ei144

From: £26.49 ex VAT
£31.79 inc VAT
Product Overview

Mains powered heat alarm with hush button from Ei, available as a replacement heat alarm detector head or complete with Easi-Fit mounting base plate.  This is the latest Ei144"RC" detector - now capable of interconnecting with the Ei1529RC remote control switch. Ideal for protecting kitchens and garages.  The Ei144RC replaces the previous Ei144 model but can still be used to extend and interlink to an existing Ei140 system.

  • 230V Hard-wired smoke alarm
  • Available in two versions:
  • With alkaline back-up battery
  • 5 year warranty
  • A maximum of 12 units can be interconnected via 3 core interconnection cable
  • Other alarms that can be interconnected include:
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • Kitemarked to BS 5446-2: 2003
  • CE Marked
  • Low battery LED indicator
  • Separate mains and warning LEDs
  • Hush button for false alarm control
  • Fixed temperature fast response thermistor type sensor, range 54° - 62° C

The table below shows all the units that can interconnect with the EI141RC.

Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei141RC Ionisation Alarm Hard wire using 3 core interconnection cable
Ei146RC Optical Alarm Hard wire using 3 core interconnection cable
Ancillary Products
Model Number
Type of unit
Type of interconnection
Y03 Multi Frequency Sounder Hard wire using 3 core interconnection cable
Ei1529RC Smoke alarm Locate, Hush and Remote test switch Hard wire Interconnect
MCP401RC Manual Call Point Hard wire using 3 core interconnection cable
Technical Data

This is the technical data for the Mains Powered Heat Alarm with Alkaline Back-up Battery - Ei144.

Back-Up Battery 9V Alkaline
Sound Output 85dB (minimum) at 3m
Temperature Range 0° to 40°C
Humidity Range 15% to 95% Relative Humidity
Dimensions (HxDia) 50x142mm

Technical Data Sheets

The following technical data sheets are available for this product:

FAQs (9)

Q. For mains powered Aico smoke and heat alarms, when the electricity supply fails and the back up battery takes over, please can you tell me how long the battery will last in this situation?

A. For mains powered Aico alarms with a new, fully charged lithium back up battery, the battery would last approx. 3-6 months without a mains supply. For mains powered Aico alarms with a standard alkaline back up battery, the battery would last up to a year without mains supply. If the alarm has been installed with an Ei168RC radio frequency base, please note that the Ei168RC back up battery would last approx 2 months if the power fails.

Q. My detector does not have "RC" stated at the end of the code. What does this stand for?

A. The RC just refers to "Remote Control" as the unit can be fitted to a radio-frequency base for interconnection. The model hasn't changed but the manufacturers changed the product code slightly in reference to this.

Q. Can I upgrade an existing Ei140 series base with a Ei160 series smoke alarm?

A. Yes, the bases for the Ei140 and Ei160 series are identical units and are interchangeable.

Q. How do you wire in the Ei140/Ei160 series of smoke alarms?

A. To wire the units correctly you would use 2 core and earth cable to the first unit and 3 core and earth to the interconnected units. The alarms do not have to be earthed but a brass screw connector is provided so that the earth can be safety terminated.

Q. How do you change the batteries in the Ei smoke alarms?

A. On the side of the smoke alarm locate the removal slot. This is directly above the arrow shown on the smoke alarm face, insert a flat bladed screw driver horizontally approximately 1cm into the removal slot, this will release the fire alarm lock and enable you to push the alarm away from you and will disconnect the alarm from the base plate. This should now expose the battery connected to the alarm enabling you to change the battery. T

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Looking to replace an old smoke alarm?

Why not use one of our fully certified easichange DIY replacement kits? Find out more

Pricing & Availability

Model Stock Levels Price Weight
Ei144EK Replacement Detector Head Kit
Product Code: EI144EK
In Stock

£26.49 ex VAT

£31.79 inc VAT

Ei144RC Heat Alarm
Product Code: EI144RC
In Stock

£27.49 ex VAT

£32.99 inc VAT


Customer Reviews

14 customers have rated this product and it has an overall rating of 4.6 out of 5

All reviews are written by real customers that have purchased the product from us. We publish all reviews, even the bad ones!

Reviewed by: SL

13th April 2015

very easy to install. excellent customer service.

Reviewed by: CS

20th December 2014

Appears to be a good product and is especially useful in the kitchen as it does not go off every time we use the toaster as we have experienced with other fire alarms.

Reviewed by: SG

27th October 2014

Had the last one for ten years hope this one last as long.

Reviewed by: RP

10th October 2013

Very efficent, would use again 5*

Reviewed by: CG

9th September 2013

Excellent product, with easy installation If this is a new installation, you need to remember to buy the seperate base plate.

Reviewed by: KB

3rd September 2013

Very quick and efficient

Reviewed by: BM

24th June 2013

Easy to fit into existing mount

Reviewed by: RS

19th May 2013

Direct replacement with simple installation

Reviewed by: -

14th June 2012

Reviewed by: -

26th March 2012

Reviewed by: -

10th February 2012

Great staff, very helpful advice by phone, thank you.

Reviewed by: -

22nd January 2012

Not Rated

Easy to fit and test,comes complete with backup battery

Reviewed by: -

14th September 2011

Reviewed by: -

27th April 2011

Not Rated

Brilliant replacement smoke alarm. 30s job to replace annoying ionisation version in the kitchen. Came with changing tool and battery.

Reviewed by: -

19th July 2010

Reviewed by: -

9th May 2010

Show All Reviews

Product Videos

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