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Ei Electronics Ei100B Smoke Alarm review

£9.00 Typical price

Test scoreShow Context

Key features
  • Smoke alarm
  • Battery only
  • Ionisation smoke alarm
Expert review

The Ei Electronics Ei100B smoke alarm comes at an attractive price and is backed with a five-year warranty but there’s no escape light on this model. To find out how quickly this alarm responds to smoke, we tested it. Our verdict on how well this alarm detects smoke is based on how it responded in the presence of smoke from four different test fires. Read on for the results of our tough tests and our verdict on this EI Electronics smoke alarm.

What's included:
  • Pros and cons
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First reviewed by Which?

July 2013

Test results
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Best Buys and Don't Buys
We have tested 38 smoke alarms and found that there are 9 Don't Buys and 8 Best Buys.
Range of Smoke alarm scores
  1. 0%
    Lowest score
  2. 38%
    Average score
  3. 93%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to smoke alarms we've tested
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Digital first month only £3.99, then £7.99 p/m, cancel any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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