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Carbon Monoxide Detector with Optional Memory Feature - Ei204EN

Discontinued Product

This product has been discontinued.

Product Overview
The Ei204EN is a battery operated CO detector with a fast CO detection test feature, easy to use test/hush feature and a 5 year sensor life.
  • Batteries included (3xAA batteries)
  • 5 years battery life and sensor lifespan
  • Loud distinct alarm (85 dBA at 3 metres)
  • with LED lights to display power and alarm status
  • Proven sensor - based on electrochemical technology
  • The unit checks the CO concentration every 50 seconds
  • At the manufacturer all units are individually calibrated and tested with CO gas to ensure accuracy
  • Detector alarms from: 30ppm (parts per million) CO gas
  • Easy to use Test/Hush button
  • Automatic self diagnostics
  • Can be tamper-proofed
  • Fast CO test mode
  • 2 Year Guarantee (limited) 
  • Kitemarked to BS EN 50291:2001 and CE marked
  • Manufactured in Republic of Ireland
  • Attractive slimline casing
  • Dimensions (HxWxD): 135x105x71mm
Technical Data
Product Code EI204ENWX
Brand EI Electronics
Weight 0.26kg
Product Datasheets
FAQs (1)
Q. Does the Ei204 carbon monoxide alarm have an end of life indicator?

Yes, the CO alarm will beep every 45 seconds and the green light will flash. There is also a 'replace by' date on the alarm.

Customer Reviews

21 customers have given this product an overall rating of 4.4 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:

Easy to install. Test system works Difficult to know how to rate this item when brand new as it is a cm detector with a number of years guarantee. Ask me again in 2026 to see if it is still working!!

Published on: 3rd August 2019

Rating: 3 / 5 Stars

Reviewed by:

OK as far as I know, 2nd one I've had, previous one was OK but had reached end of life.

Published on: 14th March 2018

Rating: 5 / 5 Stars

Reviewed by:

Does what it says on the tin (hopefully)

Published on: 17th September 2017

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