If necessary, the Decoder Tester Extension can be easily added to your Decoder Tester by simply plugging it into the side of the Decoder Tester. Now programming and testing all large scale decoders is easy.

LokSound XL decoders and LokSound L decoders with multi-pin connectors plug directly onto the extension making is easy to program and test them.

An LED monitor with 12 LEDs displays the status of all physical function outputs.

A second speaker or sensor inputs may be plugged onto the multi-pin connector for quick and easy testing. Up to four servos may also be plugged on for direct testing.

Especially for the LokSound L, connecting pins for a smoke generator have also been added.

The Decoder Tester Extension represents the perfect test and programming bench in conjunction with the Decoder Tester, where programming and testing of almost all (ESU) decoders becomes quick, easy, and fun!