Shorten Alarms is a Gene Tonic in BioShock and BioShock 2 which reduces the length of hostile security alarms. Both versions of this tonic can be used together for an increased effect.
What sound is more ominous than a yammering security alarm? With Shorten Alarms spliced, your personal EM signature becomes altered to interact uniquely with alarm sensors, shortening the period until you'll be free and clear.
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Effect:
Reduces the length of hostile security alarms by twenty seconds.
Location:
Found in room #7 of the Fighting McDonagh's Tavern. Once the Audio Diary in that room finishes playing, a painting will fall, revealing the Tonic behind it. It can also be purchased at Gatherer's Gardens in levels from Arcadia to Hephaestus.