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König SAS-HA100 review

Product alert

Don't Buy this heat alarm – it failed to detect rises in temperature in two of our five tests

When set the task of sensing rapid rises in temperature, this Konig alarm failed twice and its battery also failed to sound when it was running low.

Based on these test failures, we don’t think it’s 100% reliable and that’s why we’ve made it a Don’t Buy. König told us that it would investigate with its quality team.

Further reading on heat alarms in our smoke detectors review

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£20.00 Typical price

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Key features
  • Heat alarm
  • Battery only
  • Heat alarm
Expert review

The König SAS-HA100 heat alarm is designed to detect rises in temperature, but in our 2018 tests it failed to do this twice and that’s why we’ve made it a Don’t Buy.

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Last checked by Which?

October 2021

First reviewed by Which?

August 2018

Released

September 2014

Test results

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

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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
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