SKU: 1550
$58.95 Buy Now

    This full-featured, 4 function, drop-in decoder is designed to fit in American Z Lines modern diesel chassis. Some of the AZL locomotive it fits in includes: SD70, SD70M, SD75I, SD75M, GP9, GP38-2 and more. This decoder includes built-in forward and reverse LED’s for easy installation with no soldering. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle-free set up.

  • Back EMF Load Compensation:
  • Provides superior slow speed control and high performance under load.

  • Quiet Drive:
  • Super-quiet motor control for "buzz" free motor performance.

  • DC Mode:
  • Decoder will automatically detect DC power. You can also configure how your lighting effects function on DC.

  • Variable Momentum:
  • Allows you to make custom acceleration and deceleration curves.

  • Incandescent Bulb Support:
  • This decoder can be used with 12 Volt bulbs.

  • Function Remapping:
  • Buttons 0 through 12 may be used to control the lighting functions of this decoder.

  • Programmable Lighting Effects:
  • Choose from 20 separate user-programmable lighting effects!

  • Dimmable Brightness:
  • Configure multiple different brightness levels for your LED's or incandescent bulbs.

  • Decoder Lock:
  • Feature which prevents accidental/unwanted programming while activated.

    Dimensions (L x W x H): 1.3” x .26” x 0.1” or 33mm x 6.6mm x 2.54mm
    Scale: Z Scale
    Continuous/Peak: 1.3/2.0
    Total Functions: 4
    Function Rating: 100 mA
    12V Outputs
    Onboard LEDs

    Decoder Literature

    Download AZL4.pdf (668.51 KB)

    Comprehensive Guides

    Wiring Diagram

    One Year Goof Proof Warranty

    All decoders are covered by a one year goof proof warranty. Please return in a small box.
    You MUST register the failed decoder on our website at
    Follow the instructions on the website before returning any decoders to TCS.