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Soundtraxx Econami™ 881003, ECO-21P Steam, Digital Sound Decoder


MSRP: $79.95



The Econami ECO-21P is available in three formats:

Econami ECO-21P

Steam Sound Selections

This 1-amp digital sound decoder simply plugs into models equipped with an NMRA-supported 21-pin socket.

Available in three formats to suit a variety of steam, diesel and electric locomotives, Econami provides high-quality 16-bit sound, Hyperlight lighting effects, and Hyperdrive2 advanced motor control for enhanced realism. New features include Flex-Map technology, an easy-to-use method for assigning any function to any function key.

Steam and diesel versions include a selection of exhaust chuffs or prime movers, along with 16 whistles or airhorns to suit the most popular models. In addition, each decoder features multiple options for airpumps or compressors, bells, and couplers for even more customization. And finally, for the first time ever, each format is available in an electric version that includes a trolley bell, air whistles, generator, pantograph, pneumatic doors, and more!

This decoder includes sound files for four types of steam locomotives with 8 different exhaust chuff selections (2-cylinder or articulated). Click Below to hear samples.

Play buttonLight Steam
Play buttonMedium Steam
Play buttonHeavy Steam
Play buttonGeared Steam

It also includes:

  • 6 bells
  • 16 Whistles
  • 4 Airpumps
  • 4 Dynamos
  • 3 Couplers
  • Cylinder Cocks
  • Blower
  • Blowdown
  • Rod Clank
  • Johnson Bar
  • Emergency Brake Application
  • Brake Squeal/Release

ECO-21P Specifications:

  • Dimensions: 30.5 x 15.5 x 6.5mm
  • Max. Motor Stall Current: 1A
  • Function Outputs:  6
  • Max. Function Current:     100mA (each output)
  • Audio Amplifier:      2W, 8-Ohm Load
  • DCC Track Voltage: 10V – 22V


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