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For how long does the smoke pump out?

Since the introduction of Cloaksensor confirmation at the end of 1998 the SmokeCloak is controlled by a timer/Cloaksensor combination which ensures correct initial fill of the room, which typically takes 30-40 seconds. If the density of the vapour subsequently drops the SmokeCloak will reactivate maintaining protection.

SmokeCloaks are also fitted with a run-time timer which limits how long a machine can produce vapour after an alarm activation. The timer has two ranges, 5-25 minutes and 1-3 minutes and is factory-set at 15 minutes.