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Easichange Replacement Smoke Alarm for Ei166 and Ei166RC

More than 20 in stock Expected dispatch: 25th Sep
17 Customer Reviews
€52.95 ex VAT
€64.07 inc VAT
Product Overview

The easichange Ei166RCEK replacement head kit has been specifically designed to allow an Ei166 or Ei166RC optical smoke alarm head (the main and most visible part of the smoke alarm containing the sensor and the electronics) to be replaced at the end of its life without the need of an electrician. The kit is a genuine Ei Electronics product and contains the alarm head, a removal tool and the simple guidance required to quickly and safely replace your smoke alarm head. The smoke alarm base with the wiring is left on the ceiling in this process.

  • Genuine Ei166 replacement optical smoke alarm head
  • Rechargeable lithium back-up battery (included)
  • Supplied complete with removal tool
  • 5 year warranty
  • Test and Hush (silence) button
  • Kitemarked to BS EN 14604:2005
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • CE marked

The simple installation process of the easichange replacements kits negates the need of an electrician. The graph* below demonstrates the significant cost savings that can be achieved by using an easichange replacement kit.

Replacment Cost of an Ei166
Replacement with a qualified engineer
Replacement with the easichange replacement kit

*Graph for illustration purposes only

Technical Data
Product Code EI166RCEK
Brand EI Electronics
Back-Up Battery

Longlife Lithium Battery

Dimensions (HxWxD)


Humidity Range

15% to 95% Relative Humidity

Sound Output

85dB (minimum) at 3m

Temperature Range

0°C to 40°C

Weight 0.32kg
FAQs (2)
Q. Can I upgrade an existing Ei140 series base with a Ei160 series smoke alarm?

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

Q. Do you supply a tool to remove a mains powered smoke alarm from the base to replace the backup battery and the replacement battery required?

Unfortunately we do not sell the Easichange tool separate to the kits, however you could also try a small flat head screw driver once the mains power has been cut off from the unit. We do sell the 9v lithium longlife batteries required for these alarms.

Pricing & Availability

Model Stock Price
Product Code: EI166RCEK Stock Level:
More than 20 in stock Expected dispatch: 25th Sep

€52.95 ex VAT

€64.07 inc VAT

Customer Reviews

17 customers have given this product an overall rating of 4.6 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:

Product as ordered, delivered on time, worked as stated.

Published on: 3rd February 2016

Rating: 4 / 5 Stars

Reviewed by:

Excellent service, this was a replacement for faulty unit.

Published on: 2nd January 2016

Rating: 5 / 5 Stars

Reviewed by:

easy to fit with no hassle.

Published on: 11th November 2015

Rating: 5 / 5 Stars

Reviewed by:


Published on: 12th October 2015

Rating: 4 / 5 Stars

Reviewed by:

Fitted well but one has given erroneous alarms,okay now. On one occassion one of the alarms would not stop giving erroneous alarms, so we took it out for 24hrs. Replaced it back on the base and now seems okay.

Published on: 30th August 2015

Rating: 4 / 5 Stars

Reviewed by:

Does what says on the tin

Published on: 26th December 2014

Rating: 4 / 5 Stars

Reviewed by:

Fits perfectly and works fine

Published on: 9th February 2014

Rating: 5 / 5 Stars

Reviewed by:

Exactly what I was looking for

Published on: 22nd June 2013

Rating: 5 / 5 Stars

Reviewed by:

Excellent, easy to change.

Published on: 18th May 2013

Rating: 5 / 5 Stars

Reviewed by:

excellent - simple to change unit

Published on: 11th May 2013

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Direct Telephone 042 9756509


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