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Permanent Power Switch Unit (DSU)

The way to switch digital (e.g. illuminations)!


Features of the DSU

  • Permanent Power Switch Units (DSU) can be connected directly to each output of our Turnout Decoder S-DEC-4.
  • Very easily you can now operate digitally turnout-lights or road-/ house-illuminations.
  • As the Permanent Power Switch Unit DSU measures only 38 x 27 x 15 mm it can be very easily installed in buildings etc.
  • Simple and secure connection to our Turnout Decoder S-DEC-4 and to any source of lights by screw clips.

Permanent Power Switch DSU at the output 2 of the Turnout-Decoder S-DEC-4 for switching of turnout illumination.

  • If the Permanent Power Switch DSU will be combined with the Turntable-Decoder TT-DEC will at a 2-conductor turntable bridge the polarity automatically changed at any 180 degree turning.

Permanent Power Switch DSU at the TurnTable-Decoder TT-DEC for the turntable bridge polarity change on Fleischmann 2-conductor turntables.

  • A ready to use finished module for a maximum load of up to 2A (two switch contacts with up to 1A each).
  • The permanent power switch unit DSU is equipped with a bistable relay which ‘stores’ the short switch-over impulses of the turnout decoder S-DEC-4. This allows the lights to be switched permanently on or off.
  • Each permanent power switch unit DSU will be supplied with a detailed operation-/ assembly instruction.
    Those instructions can be found within the next section.
  • The finished module comes with 24 month warranty.


Instructions regarding this article can be found here: Downloads DSU.
Instructions for all LDT-Components can be found here: Overview Downloads.

Add to Wish List / Prices

Attention: Products can only be added to the Wish List, if you are registered as customer at the LDT WebShop or if you are initially registered by interest of our products.

Add to Wish List: DSU (Part-No.: 700012): Permanent Power Switch Unit as a finished module (11,90 €*).

* All prices incl. VAT, plus Shipping.

Subject to technical changes and errors.
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