ESU Profi Decoder Tester – The Easy Way to Test Your Decoders

Ever wanted to test a digital decoder before installing it into a locomotive? The ESU Profi Decoder Tester makes the process simple and reliable. Just connect it to your command station or the ESU LokProgrammer, and you can check any decoder’s performance without the influence of a locomotive’s motor, lighting, or wiring.

Key Features

Universal Compatibility
Equipped with all common interface sockets used in smaller scales:
- 6-pin NEM 651
- 8-pin NEM 652
- 21MTC (NEM 660)
- PluX22
- Next18
  Whatever decoder you’re testing, simply plug it in – no fuss.
Support for Non-Standard Decoders
Decoders without an interface can be connected via individual terminals.
Built-In Motor & Indicators
A high-quality coreless motor with flywheel lets you assess smooth running, low-speed performance, and speed consistency. Directional LEDs show motor output at a glance.
Lighting & Function Testing
LED monitors check operation of headlights, tail lights, and AUX1–AUX6 function outputs.
Integrated Speaker
A 20 mm loudspeaker is included for testing LokSound decoders. The speaker can be set to off, 100 Ohm, or 16 Ohm, making the tester compatible with all generations of ESU decoders.
SUSI Interfaces
Two SUSI plugs are provided for testing add-on SUSI modules or connecting to an additional circuit board.
Simple Connections
The Profi Decoder Tester connects easily to a command station or LokProgrammer using the supplied removable 2-pole terminal block (the same system used on the LokProgrammer and ECoS). Alternatively, solder points are provided.

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ESU 53900 Profi Decoder Tester