American Fibertek N-TAH - Manual (Page 31)

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When an action is taken to set a target aux out for a specific time duration, the beginning
of that duration will be from when the N-TAH first succeeded in contacting the target unit,
not from when the alarm was triggered. Thus if a N-TAH is set to set a specific aux
contact out ON for 5 seconds when an alarm input is triggered, and it takes 3 seconds to
initially contact the target, the N-TAH will turn the target OFF 5 seconds after turning it
ON and therefore 8 seconds after the alarm.