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About our test
Our test was conducted in the fire laboratory of the Building Research Association (BRANZ). We purchased 3 examples of each model. Our results are the average of the performances of the 3 examples.
The alarms were fixed to a ceiling panel in a mocked-up hallway adjacent to the door opening of a fireproof room (which was about the size of a single-car garage).
In both tests, the smoke density was measured at the location of the alarms using a laser light-source and detector.
This information is available to Consumer members only.