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9V Radio-Interlinked Heat Alarm - Ei3103RF

Discontinued Product

This product has been discontinued and is no longer available to buy.

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Product Overview

The Ei3103RF is an entirely wireless interconnectable heat alarm from the Ei3100 series.  It is supplied as standard with a 9V alkaline battery and has full test / hush functionality.

  • 5 year Warranty
  • Wireless, interconnectable smoke and heat alarms. No base plate required
  • Battery operated (9V), alkaline battery supplied as standard
  • Can interlink with all other EI radio-interlinked alarms (Please note: only the test function of accessories Ei411H and Ei410 will work with this unit)
  • Alarms that can be interconnected include:
    -   Ei3100RF, Ei3105RF
  • Suitable for installations complying to BS 5839-6: 2013 Grade F
  • Kite-marked to BS5446-1:2000
  • CE Approved
  • Test button to check performance
  • Fast responding thermistor sensor
  • If one alarm detects heat, all connected alarms will sound to give maximum warning time
  • Alarms at temperatures of  58°C and above
  • No central alarm panel needed
  • RF range 150 metres (minimum) in free space and up to 30 metres in buildings. Larger buildings can easily be covered, as the units can act as repeaters (daisy-chaining)
  • A maximum of 12 units can be interconnected
  • Digitally coded to avoid interference with neighbouring systems
  • 85db alarm (minimum) at 3m
  • Please Note: These alarms are sold as individual units

The table below shows all the units that can interconnect with the EI3103RFU.

Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei3100RF Ionisation Smoke Alarm Radio-interlinked
Ei3105RF Optical Smoke Alarm Radio-interlinked
Ei168RC/Ei141 Ionisation Smoke Alarm Radio-interlinked using the Ei168RC base
Ei168RC/Ei144 Heat Alarm Radio-interlinked using the Ei168RC base
Ei168RC/Ei146 Optical Smoke Alarm Radio-interlinked using the Ei168RC base
Ancillary Products
Model Number
Type of unit
Type of interconnection
Ei407 Wireless Manual Call Point Radio-interlinked 
Ei410T Remote Control Test Device Radio-interlinked
Technical Data

Technical Data

This is the technical data for the 9V Radio-Interlinked Heat Alarm - Ei3103RF.

Product Code EI3103RF
Weight 0.19kg
Dimensions (HxWxD) 140x120x45mm
Battery Type 9V Alkaline
Sound Output 85dB (minimum) at 3m
Temperature Range 0°C to 40°C
Humidity Range 15% to 95% Relative Humidity
FAQs (11)
Q. Do the Ei3100RF alarms require anything other than fixing to the ceiling to install them?

No, with this series of radio interlinked alarms there is nothing other than pressing the house code button required to install them.

Q. If the radio interlinking signal on one unit fails will the units still work as stand alone units.

Yes, should the radio interlinking signal fail the units will continue to sound independently should they detect a fire.

Q. Can a wireless router interfere with the radio interlinked alarms?

A wireless router is very unlikely to interfere with the signal of your radio interlinked alarms, as the RF signal of the smoke alarms is digitally coded.

Q. Do the radio interlinked units give out a constant signal all the time and does this decrease the battery life more than a non-interlinked alarm?

Yes, radio interlinked alarms are periodically sending and receiving signals from other units in the network and therefore the life of the battery is reduced. Units with alkaline batteries should have the batteries are changed annually [unless they are fitted with a sealed 10 year battery as eg in the Ei600RF series].

Q. Do I need to take out all the batteries in my radio-interlinked alarms before adding a new alarm into the system?

No, you do not need to remove all the batteries. Just simply press the house code button on all the units. Please ensure that the batteries have full power as this could render the house code process incomplete.

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Customer Reviews

7 customers have have given this product an overall rating of 4.9 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5 Stars

Reviewed by:


Published on: 23rd September 2015

Rating: 5 / 5 Stars

Reviewed by:

Very pleased with the product. Excellent service. Extremely helpful staff. Thank you.

Published on: 6th April 2014

Rating: 5 / 5 Stars

Reviewed by:

easy to set up easy to set up, easy to install

Published on: 10th July 2013

Rating: 5 / 5 Stars

Reviewed by:

Good product, easy to install & setup. Happy customer so far.

Published on: 10th May 2013

Rating: 4 / 5 Stars

Reviewed by:

The test button has to be pressed for a relatively long period of time (longer than the smoke alarms) before the other interlinked alarms trigger.

Published on: 20th January 2013

Rating: 5 / 5 Stars

Reviewed by:

Published on: 6th November 2012

Rating: 5 / 5 Stars

Reviewed by:

Very happy with this unit. We have just moved house and this and other EI smoke alarms were up and running as a full interlinked system within hours.

Published on: 7th June 2010

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Direct Telephone 042 9756509


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