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External monitoring

Discussion in 'Security Alarms' started by Guest, May 18, 2004.

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  1. Guest

    Guest Guest

    I am wading through many different opinions on external monitoring devices.

    It comes down to this... do I install a dual beam system, or a "sideways
    looking" passive like the optek BX80?

    I can't find two people to agree nywhere close to me... do you chaps have
    any opinion?

    Thanks
    Michael
     
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