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Looking for info on Philips alarm system

Discussion in 'Hobby Electronics' started by Barry OGrady, Feb 12, 2004.

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  1. Barry OGrady

    Barry OGrady Guest

  2. Unbeliever

    Unbeliever Guest

    Sorry Barry, I seem to be having trouble acessing the picture on your C
    drive.

    Cheers,
    Alf
     
  3. David Sauer

    David Sauer Guest

  4. Yep, it sure is a blast from the past......

    Let's see, it's about a 1970 vintage ultrasonic alarm.

    Time for the bin, they were innovative in their time but highly
    suspectable to false alarms since they detected movement.

    Cheers,

    Mark
     
  5. Barry OGrady

    Barry OGrady Guest

    Fixed now.

    -Barry
    ========
    Web page: http://members.optusnet.com.au/~barry.og
    Atheist, radio scanner, LIPD information.
     
  6. Barry OGrady

    Barry OGrady Guest

    Sorry about the mess up with the picture. It's fixed now.
    I guessed it was ultrasonic. It seems to work OK. I left it turned on in a room and forgot
    about it for a couple of hours until I walked into the room and it went off.
    Thanks for the info. I bought it amongst some stuff at an auction years ago.
    I wanted to do a search for info but the identifying label is missing.

    -Barry
    ========
    Web page: http://members.optusnet.com.au/~barry.og
    Atheist, radio scanner, LIPD information.
     
  7. And since I might not be able to answer any further questions for a
    few days....

    It had a separate variable entry and variable exit display. The
    switches on the front were a 'code' to enable or disable it, basically
    6 switches in parallel, if any were on the alarm was on. If you forgot
    the number, or pressed a wrong button you had to take the unit apart
    (after unplugging from the mains and removing the backup D cells), the
    you could see the rear of the switches and see which ones were turned
    on.

    As I said earlier it detected movement, hence anything swaying in the
    breeze would set it off.

    Mark
     
  8. Andy Wood

    Andy Wood Guest

    Barry,

    Model LHD 1100 - the two I still have say "Made in Italy" on the back.

    I have a 12 page user manual if you want some specific information.
     
  9. Barry OGrady

    Barry OGrady Guest

    Mine has the Made in Italy sticker but the one with the model number is missing.
    Thank you. It appears to be working. I'll do some Googling and may get back to you.

    Do you use the ones you have?


    -Barry
    ========
    Web page: http://members.optusnet.com.au/~barry.og
    Atheist, radio scanner, LIPD information.
     
  10. Barry OGrady

    Barry OGrady Guest

    Google shows nothing under that number.

    -Barry
    ========
    Web page: http://members.optusnet.com.au/~barry.og
    Atheist, radio scanner, LIPD information.
     
  11. Franc Zabkar

    Franc Zabkar Guest

  12. Andy Wood

    Andy Wood Guest

    Well, they must now be about 30 years old! Faded into obscurity before
    Google's time.

    I have not used them for perhaps 25 years.

    No, I don't know why I've still got them...


    Andy Wood
     
  13. Barry OGrady

    Barry OGrady Guest

    I picked up mine years ago in a box of junk from an auction.
    I just dragged it out to have a play with and it still works.

    -Barry
    ========
    Web page: http://members.optusnet.com.au/~barry.og
    Atheist, radio scanner, LIPD information.
     
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