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Wireless Motion Sensor slow to start

Discussion in 'Security Alarms' started by KSG, Feb 26, 2006.

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  1. KSG

    KSG Guest

    I have a wireless motion sensor and I have tried setting on my alarm
    and then starting in the back of the room to see how far I can get. I
    notice that if I do this test immediately after the alarm system delay
    is finished the motion sensor doesn't go off, even if I jump in front
    of the sensor. But if I wait a few minutes, then it does catch me.

    Is there some additional delay before the motion sensor starts? Is
    this to preserve battery life that it only checks to see if the alarm
    is set every five minutes or something?

    Thanks!

    KSG
     
  2. Jim Rojas

    Jim Rojas Guest

    Most wireless motion detectors will wait 2 minutes in between picking you up
    to help conserve power. If it did not do this, you would be replacing the
    batteries often.

    Jim Rojas
     
  3. Frank Olson

    Frank Olson Guest


    There's usually a three minute "reset" incorporated into the PIR's
    transmitter. This basically "saves" the battery. If the unit were to
    transmit continuously, you'd be changing batteries in it on a weekly
    basis. After the three minutes expires, the sensor is "armed" to
    receive IR energy and transmit an alarm instantly. When that happens it
    goes "dormant" for another three minutes and the whole process starts over.

    Frank Olson
    http://www.yoursecuritysource.com
     
  4. KSG

    KSG Guest

    Jim, thanks for the quick reply. Let me restate to be sure that I
    understand.

    You're saying that the wireless alarm samples for movemeent every two
    minutes, hence missing me for the first couple of minutes as I jujmp in
    front of the alarm.

    Thanks!

    KSG
     
  5. KSG

    KSG Guest

    Ignore my posting preceedin this one. I got it.

    Thanks to both you and Frank!

    KSG
     
  6. KSG

    KSG Guest

    Ignore my posting preceedin this one. I got it.

    Thanks to both you and Frank!

    KSG
     
  7. Karl Magnus

    Karl Magnus Guest

    No, it "sees" you all the time. However, if it senses motion, and it has
    transmitted in the last 2 mins, it will not transmit again until it sees
    two minutes of "silence" and THEN detects motion. (supervisories not
    included)
     
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