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Easichange® Replacement Smoke Alarm for Ei146

40 Customer Reviews
£29.99 inc VAT
£24.99 ex VAT
Product Overview

The easichange® Ei146EK replacement detector kit has been specifically designed to allow an Ei146 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 and a simple guide explaining how to quickly and safely replace your smoke alarm head. Every order also contains a free specially designed removal tool. The smoke alarm base with the wiring is left on the ceiling in this process.

  • Genuine Ei146 replacement optical smoke alarm head
  • 9V alkaline battery back-up battery (included)
  • FREE removal tool with every order
  • 5 year warranty
  • Test and Hush (silence) button
  • Kitemarked to BS EN 14604: 2005
  • Suitable for installations complying to BS 5839-6: 2019 Grade D2
  • CE marked

The simple installation process of the easichange® replacements kits negates the need of an electrician.

Technical Data
Product Code EI146EK
Alternative Product Codes Ei146, Ei146RC, Ei146EK, Eo146ek
Brand EI Electronics
Back-Up Battery

9V Alkaline

Dimensions (HxWxD)


Relative Humidity

15% to 95% Relative Humidity

Sound Output


Weight 0.35kg
Product Datasheets
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?

Yes, we do sell the Easichange tool separate to the kits. We also sell the 9v lithium longlife batteries required for these alarms.

Pricing & Availability

Model Stock Price
Product Code: EI146EK Stock Level:
More than 20 in stock Expected dispatch: Tomorrow

£29.99 inc VAT

£24.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.79 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£7.91 inc VAT - Orders will be delivered in 1-2 working days by Hermes

Customer Reviews

40 customers have given this product an overall rating of 4.8 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: 4 / 5 Stars

Reviewed by: R L

see above

Published on: 14th June 2019

Rating: 5 / 5 Stars

Reviewed by: D L

Works perfectly

Published on: 4th May 2018

Rating: 5 / 5 Stars

Reviewed by: P O

Sppedy delivery and quick to install

Published on: 17th April 2018

Rating: 5 / 5 Stars

Reviewed by: M G

Exactly as specified nice touch with the complementary tool.

Published on: 13th March 2018

Rating: 5 / 5 Stars

Reviewed by: P K

Happy with this alarm so bought replacement as it was 10 years old.

Published on: 25th January 2018

Rating: 3 / 5 Stars

Reviewed by: V G

The smoke alarm goes off when I open bathroom door after taking a hot shower.,...the steam sets it off...somewhat ridu

Published on: 16th October 2017

Rating: 5 / 5 Stars

Reviewed by: D C

Easy to install Straight forward to order and quick delivery.

Published on: 17th September 2017

Rating: 4 / 5 Stars

Reviewed by: H F

prompt delivery and easy fitting

Published on: 10th September 2017

Rating: 5 / 5 Stars

Reviewed by: L W

Very easy to replace

Published on: 1st September 2017

Rating: 5 / 5 Stars

Reviewed by: J M

Easy to remove spent unit and slide in new unit.

Published on: 18th August 2017

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