alarm monitor

Discussion in 'The Projects Forum' started by Morty642, Sep 25, 2013.

  1. Morty642

    Thread Starter New Member

    Sep 24, 2013
    2
    0
    Can someone help please. I require a product or circuit which will respond to the sound from a fire alarm, and provide a voltage free trigger to close an automatic door opener
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,156
    3,063
    What's a voltage-free trigger? Do you mean closing a contact, or the equivalent?

    A wire from the alarm to the door, to avoid needing to "hear" the alarm, would be the most sure solution.
     
  3. Morty642

    Thread Starter New Member

    Sep 24, 2013
    2
    0
    A closing contact is correct. Wiring into a 3rd party alarm is not possible for this job, so I wondered if anyone had any thoughts
     
  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,771
    971
    Google "sound activated relay" ... there are TONS of schematics/kits out there.
     
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