Need help identifying a misterious appliance

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  • kotel studios
    Badcaps Veteran
    • Dec 2024
    • 200
    • Poland
    #1

    Need help identifying a misterious appliance

    Hi
    Hopefully this went in the correct forum.

    Going through my junk I found whatever this thing is (see attachments).

    I do not what exactly it is, my guess is either some ethernet appliance or a garage door opener.
    Got it from germany, so maybe that'll help with something.
    It has:
    A hahn Prim transformer (with 2x9VA and 2x5VA outputs, 230V input)
    A diode rectifier connected to the outputs of said transformer
    PIC16F628X-20/P
    Philips TDA85521
    TPIC6C596
    ST 74HC597
    2x MAX487X
    Microchip technology 12C508A
    4x RJ45 (my-net 1/2; RS-232 Dig In; my-remote)
    1x RJ11 (Audio IN)

    Anybody more specialized than me who could ID what this thingmabob?
    Attached Files

    if you find these attachements useful please consider making a small donation to the site

    Tags: None
    • truclacicr
      Badcaps Veteran
      • Apr 2019
      • 356
      • australia
      #2
      If you have an audio input, one would expect an audio output.

      The "Philips TDA85521" chip appears to be TDA8552T:

      https://www.nxp.com/docs/en/data-sheet/TDA8552T_TS.pdf

      Max487 is an RS-485/RS-422 Transceiver:

      https://www.analog.com/media/en/tech...487-MAX491.pdf
      Last edited by truclacicr; 11-17-2025, 02:44 PM.

        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9624
          • Canada
          #3
          Contact oemsecrets, i'm sure they can help

            Comment

            • kotel studios
              Badcaps Veteran
              • Dec 2024
              • 200
              • Poland
              #4
              Originally posted by R_J
              Contact oemsecrets, i'm sure they can help
              Aren't they used for comparing individual electronic components from different distributors? I highly doubt they could even ID such mysterious equipment from before ~2005...

                Comment

                • Agent24
                  I see dead caps
                  • Oct 2007
                  • 5095
                  • New Zealand
                  #5
                  Originally posted by truclacicr
                  If you have an audio input, one would expect an audio output.
                  Not necessarily, it could be just for a sound-activated switch or something.

                  I'm wildly guessing some kind of home automation controller, it has 3 relays for switching things, and inputs that could be connected to various other systems.
                  "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                  -David VanHorn

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