We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Coronavirus Read our latest advice

Cavius 2001-033 review

£23.00 Typical price

Test score %

Key features
  • Smoke alarm
  • Battery only
  • Optical smoke alarm
Reviewed

The Cavius 2001-033 smoke alarm is tiny – just 4cm in diameter – but it’s designed to do exactly the same job as larger alarms. It’s powered by a replaceable CR2 battery, the kind you might use in a camera, and it uses photo-electric sensors to tell you when there’s smoke in your home. Based on the technology it uses to detect smoke, it would be best to place it in a bedroom, living room, hall or landing. It comes with a two-year warranty. But what’s this compact smoke alarm like at detecting smoke? To find out, we tested it. Read on for our full review of this Cavius battery-powered smoke alarm.

Included in our expert review
  • Pros and cons
Try Which?
First month only £5, then £9.99 per month, cancel any time

Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we test smoke alarms>
Try Which?
First month only £5, then £9.99 per month, 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.

Make smarter choices

We have tested 34 smoke alarms and found that there are 9 Don't Buys and 5 Best Buys.
Range of Smoke alarm scores
  1. 0%
    Lowest score
  2. 43%
    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
Try Which?
First month only £5, then £9.99 per month, 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.

    CompareRemove all products