The detector tester (delivered with bellow DZZ1190) is placed over the detector and given a brief push
to release the test gas and so simulate the presence of fire aerosols. The detector responds quickly and
actuates an alarm. The test gas is free of halogenated chlorofluorocarbons (CFCs). It is not combustible.
The extension rod FDUM291/292 and the test gas can REF8, REF8-S must be ordered separately.