Decoders and Accessories

The IMFTA4 is a N-scale drop-in decoder which is specifically designed for InterMountain FTA locomotive. Back EMF Load Compensation: Provides superior slow speed control and high performance under load. Quiet Drive: Super-quiet motor control...

The IMFTB4 is a N-scale drop-in decoder which is specifically designed for InterMountain FTB locomotive. Back EMF Load Compensation: Provides superior slow speed control and high performance under load. Quiet Drive: Super-quiet motor control...

The K0D8 is a N-scale drop-in decoder for Kato locomotives. Examples include the following: Kato:F3AF7A See the installation pages for a full list of compatible engines! Note: The K0D8 line of decoders are available with different lighting...

The K0D8 is a N-scale drop-in decoder for Kato locomotives. Examples include the following: Kato:F40PH See the installation pages for a full list of compatible engines! Note: The K0D8 line of decoders are available with different lighting...

This M1 decoder (see M1 for more information) comes connected to a 3.5" (8.89 cm) long harness which is terminated with a 8-Pin NMRA plug rotated 180 degrees from the standard orientation. This allows the decoder to fit better in certain applications.

1388 M1P-5" 2-Function Hard-Wire Decoder for HO Scale Locomotives

This M1 decoder (see M1 for more information) comes connected to a 3.5" (8.89 cm) long harness which is terminated with a 8-Pin NMRA plug rotated 90 degrees from the standard orientation. This allows the decoder to accommodate the UK's narrow gauge...

The L1D4 is a N-scale drop-in decoder which has been designed for Life Like and Walthers Proto locomotives. Examples include the following: Life Like:GP20GP60 Walthers (Proto):GP20GP38-2 See the installation pages for a full list of...

The K4D6 is a N-scale drop-in decoder specifically designed to fit the Kato N-Scale MP36PH locomotive. This decoder is also commonly paired with the K4-LK lighting kit for the MP36PH. Note: The K4D6 does not have the copper tabs installed which slip...

The A6X is six function HO-scale "drop-in" style mobile decoder with integrated 1.5V power supply for Atlas, Athearn, Kato, etc. locomotives. Examples include the following:Athearn:F59PHIF3Atlas:RS-1/RS-3/RS-11C424GP7Kato:GP35 The A6X-KA includes...

The K0D8 is a N-scale drop-in decoder for Kato locomotives. Examples include the following: Kato:ALCO PA-1E5AE6AE8AE9A See the Installation Pages for a full list of compatible engines! Note: The K0D8 line of decoders are available with...

This motherboard is designed to replace the existing circuit board in a Bachmann Light 4-8-2 (short tender) or the 2-8-0. This board provides an onboard Keep Alive® for uninterrupted performance over troublesome tracks. NOTE: This product does not...

The MT1500 is a N-scale drop-in decoder which was designed specifically to fit in the Micro-Trains Line SW1500 diesel switcher. The decoder features a built-in forward headlight, and support for one additional light function. Back EMF Load...

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...

The IMF4-NF is a N-scale drop-in decoder which is designed for InterMountain F-unit locomotives. Examples include the following: InterMountain:F3A/BF7A/BF9B See the installation pages for a full list of compatible engines! NOTE: This...

The IMFP4-NF is a N-scale drop-in decoder which is designed for InterMountain FPA-unit locomotives. Examples include the following: InterMountain:FP7AFP9A See the installation pages for a full list of compatible engines! NOTE: This version...

The K6D4 decoder is specifically designed to operate the Kato N-Scale FEF-3 4-8-4 steam locomotive. Note: This decoder features a specialized motor control algorithm for use with the core-less motor used in the FEF-3. For use in other engines such...

The AZL1D4 is the first drop-in decoder designed for the latest generation of American Z Line diesel locomotives. The design features a screw-down design, unlike previous designs which relied on slide-on contacts. Examples of locomotives which this...

This motherboard is designed to replace the original lighting board in Intermountain and Bowser diesel locomotives. Created to fit the Intermountain ES44 as well as the Bowser S12, the IB-MB1 will fit a wide array of other locomotives. However, it will...

This motherboard is designed to replace the original lighting board in Intermountain and Bowser diesel locomotives. Created to fit the Intermountain SD40-2 as well as the Bowser C-636, the IB-MB2 will fit a wide array of other locomotives. However, it...

This motherboard is designed to replace the DCC decoder found in DCC equipped Intermountain and Bowser diesel locomotives. Created to fit the Intermountain ES44 as well as the Bowser S12, the IB-MB1 will fit a wide array of other locomotives. However, it...

This motherboard is designed to replace the DCC decoder found in DCC equipped Intermountain and Bowser diesel locomotives. Created to fit the Intermountain SD40-2 as well as the Bowser C-636, the IB-MB2 will fit a wide array of other locomotives...

This motherboard is designed to replace the original lighting board in Atlas and Kato diesel locomotives. Included on this motherboard is a KA2 Keep Alive® for smooth operation over troublesome tracks. Pair with a WOW121 for unparalleled sound and...

This motherboard is designed to replace the original lighting board in Atlas and Kato diesel locomotives. Included with this motherboard is a KA4 Keep Alive® for smooth operation over troublesome tracks. Pair with a WOW121 for unparalleled sound and...

This motherboard is designed to replace the original lighting board in Atlas and Kato diesel locomotives. Included with this motherboard is a KA4 Keep Alive® for smooth operation over troublesome tracks. Pair with a WOW121 for unparalleled sound and...

This motherboard is specifically designed to replace the original lighting board in the Walthers Mainline GE ES44 "GEVo" diesel locomotive. Included on this motherboard is a KA2 Keep-Alive™ for smooth operation over troublesome tracks. Pair with a...

The IMD4 is a N-scale drop-in decoder which is designed for InterMountain locomotives. Examples include the following: InterMountain:SD40-2W See the installation pages for a full list of compatible engines! Back EMF Load Compensation:...

The K7D4 is a 4-function N-scale drop-in decoder designed to fit Kato locomotives. Examples include the following:Kato:ACS-64EMD SPD40FGe 4/4 II and III "Glacier Express"See the installation pages for a full list of compatible engines!Back EMF Load...

The K0D8 is a N-scale drop-in decoder for Kato locomotives. Examples include the following: Kato:E7A See the Installation Pages for a full list of compatible engines! Note: The K0D8 line of decoders are available with different lighting...

2 CV-Selectable Steam & Diesel Sound Schemes IncludedMobile Decoder with SoundFX v3Fits many HO locomotives21MTC interfaceMotor 1.0 Amp/2 Amps Peak8 FX3 Functions, 200ma OutputNew sound .spjs loadable with Digitrax USB programmer

The A6X is six function HO-scale "drop-in" style mobile decoder with integrated 1.5V power supply for Atlas, Athearn, Kato, etc. locomotives. Examples include the following: Athearn:F59PHIF3Atlas:RS-1/RS-3/RS-11C424GP7Kato:GP35 Back EMF Load...

2 CV-Selectable Steam & Diesel Sound Schemes IncludedMobile Decoder with SoundFX v3Fits many HO locomotivesDigitrax 9-Pin HarnessMotor 1.0 Amp/2 Amps Peak6 FX3 Functions, 200ma OutputNew sound .spjs loadable with Digitrax USB programmer10-Pin sound...

The M1 is a small form factor hard-wire decoder with 2 lighting functions for HO-scale and N-scale installations. This decoder is designed for installations where space is limited. This decoder is also available with 8-pin NMRA plugs or Keep Alive®...

The MC4 is a 4-function HO and N scale hard-wire decoder with a 7 pin JST socket. The MC4 is designed for use in locomotives where a T-series or M-Series decoder is too large, and more than 2 lighting functions are needed. The MC4 is great for use in...

The A4X is four function HO-scale "drop-in" style mobile decoder for Atlas, Athearn, Kato, etc. locomotives. Examples include the following:Athearn:F59PHIF3Atlas:RS-1/RS-3/RS-11C424GP7Kato:GP35See the installation pages for a full list of compatible...

Features: DN143K2 makes installation possible though it is somewhat challenging because of the model itself. If you use reasonable care, you will be able to handle this installation. RDC Special Lighting: 3 light boards...

Replaces DN163A2Board Replacement Decoder for Atlas N Scale GP7, GP9 and GP15-1, GP30, GP35 and similar locosDecoder Lock equipped SpecificationsCurrent Rating-Motor: 1.5 Amp (2.0 Amps Peak)Size: 9.5mm x 98.3mm x 4.0mmInstallation: Board replacement...

Board Replacement Decoder for Marklin Mini Club 88455 and others. 1 Amp with 2 FX3 Functions.SpecificationsCurrent Rating-Motor 1.0 Amp/1.25 Amps PeakSize 0.421” x 2.357” x 0.087” (10.6934mm x 59.8678mm x 2.2098mm)

Board Replacement Decoder for Marklin Z 88584 and others.1 Amp with 2 FX3 Functions.SpecificationsCurrent Rating-Motor1.0 Amp/1.25 Amps PeakSize0.415” x 2.722” x .0108” (10.541mm x 69.1388mm x .27432mm)InstallationBoard Replacement (read more)Function...

This full featured, 2 function, Direct Plug decoder is designed to easily plug into a vast array of locomotives with 8Pin NMRA Sockets. The 8-Pin NMRA plug built directly into this decoder make installation a snap. Included is our auto-adjusting BEMF for...

This full featured, 2 function, Direct Plug decoder is designed to easily plug into a vast array of locomotives with 8Pin NMRA Sockets. The 8-Pin NMRA plug built directly into this decoder is rotated 90 degrees to allow for easy installation in many UK...

The A4X is four function HO-scale "drop-in" style mobile decoder for Atlas, Athearn, Kato, etc. locomotives. Examples include the following: Athearn:F59PHIF3Atlas:RS-1/RS-3/RS-11C424GP7Kato:GP35 See the installation pages for a full list...

Basic Quad Stationary Decoder for Slow Motion Turnout Machines, add cost effective DCC control to your slow motion turnouts. DS44 Features:No frills stationary decoder.Simple installation and set up.Control 4 slow motion turnout machines from your...

Board Replacement Decoder for American Z Line (AZL) GP-30 Diesels and others. 1 Amp with 2 FX3 Functions.SpecificationsCurrent Rating-Motor1.0 Amp/1.25 Amps PeakSize0.271” x 1.296” x .099” (6.8834mm x 32.9184mm x 25.146mm)

Z Scale Mobile DecoderDCC Board Replacement for AZL PA1 locomotive2 FX3 FunctionsTorque Compensation for smooth as silk silent operation.128 Speed Step operation (14 or 28 steps can also be used)Momentum with acceleration and decelerationNormal Direction...

Series 6 Features4 FX3 Functions.386” x .559” x .137”9.8mm x 14.2mm x 3.48mmFits Many N and HO Locomotives

Fits Many DCC-Ready Z, N and HO Scale Locomotives    Size: .55” x .4” x .148”    14mm x 10.23mm x 3.77mm    Z/N/HO Scale    1.0 Amp/1.5 Amps Peak    4 FX3 Functions, 0.5...

The MC2 is a 2-function HO and N scale hard-wire decoder with a 7 pin JST socket. The MC2 is designed for use in locomotives where a T-series or M-Series decoder is too large. This decoder may be hard-wired, but is also available with 8-pin NMRA plugs...

The DP2X-UK is a HO-Scale direct-plug decoder designed for engines equipped with 8-pin NMRA (NEM652) sockets. By far one of the easiest decoders to install, the DP2X-UK can be plugged into many locomotives with no effort. In contrast to the standard...

This full featured, 2 function, Direct Plug decoder fits the Life Like FA1 as well as other Life Like locomotives with a headlight and a seperate mars light. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle free set...

This motherboard is designed to replace the existing circuit board in a Walthers Proto 2000 Heritage 0-6-0 and 0-8-0. This board is designed to receive a WOW121 or EU621 decoder and provides an onboard Keep Alive® for uninterrupted performance over...

This motherboard is designed to replace the existing circuit board in a Bachmann Heavy 4-8-2. This board is designed to receive a WOW121 or EU621 decoder and provides an onboard Keep Alive® (KA2 style) for uninterrupted performance over troublesome...

This motherboard is designed to replace the existing circuit board in a Bachmann Baldwin 2-8-2. This board is designed to receive a WOW121 or EU621 decoder and provides an onboard Keep Alive® (KA2 style) for uninterrupted performance over troublesome...

This motherboard is designed to replace the original lighting board in Bachmann steam engines including the K4 steam. Included on this motherboard is a KA3 Keep Alive® for smooth operation over troublesome tracks. Pair with a WOW121 for unparalleled...

This motherboard is designed to replace the original lighting board in Bachmann steam engines including the 4-6-0. Included on this motherboard is a KA3 Keep Alive® for smooth operation over troublesome tracks. Pair with a WOW121 for unparalleled sound...

Digitrax Easy Connect 8 Pin Plug to 8 pin DCC medium plug Motor & Function Decoder that fits many N and HO Scale Locos.    Size: 0.87” x 0.4” x 0.2”    22.16mm x 10.28mm x 5.1mm    N...

TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work.  Newly-redesigned at half the size of a KA3, the KA1 will power HO or N scale locomotives with...

TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work.  Newly-redesigned at half the size of a KA4, the KA2 will power HO or N scale locomotives with...

TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work. The WAUX-KA4 will power an HO-Scale locomotive with headlights on for approximately 6 to 20 seconds...

TCS Keep Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work. The WAX-KA3 will power an HO-Scale locomotive with headlights on for approximately 6 to 20 seconds...

Fits many 21MT equipped HO locomotivesDigitrax 21-pin MT socket1.0 Amp/2 Amps Peak8 FX7 Functions, 300ma Output

Fits many older Atlas N locomotivesMobile DecoderDrop in “A0” Atlas light board replacement decoder1.0 Amp/2 Amps Peak4 FX3 Functions, 200ma output

Board Replacement Decoder for Kato N-Scale Glacier Express1.5 Amp/2.0 Amps Peak Motor Current Rating6 FX3 Functions-500mA Function Current RatingSpecificationsCurrent Rating-Motor1.25

Board replacement Decoder for Kato N Scale MP36PH MetraSpecificationsCurrent Rating-Motor1.00 Amp (1.25 Amps Peak)Size0.411” x 2.351” x .061” (10.4394mm x 59.7154mm x 15.494mm)

Board Replacement Decoder for Walthers Proto GP20 and similar locosSpecificationsCurrent Rating-Motor1.00 Amp (1.25 Amps Peak)Size0.35” x 2.12” x 0.044” (8.89mm x 53.848mm x 11.176mm)InstallationBoard replacement decoderFunction Outputs6-500mA

Fits New InterMountain N Scale SD40-2 released 20171.5 Amp/2 Amp Peak6 FX3 Functions, 0.5 Amp.329” x 2.603” x .065”8.36mm x 66.11mm x 1.64mm

Features:This 2 function FX3 decoder is designed to fit MicroTrains Z scale GP-35 locos. 128 Speed Step operation (14 or 28 steps can also be used)Momentum with acceleration and deceleration.Normal Direction of Travel is user selectable.3 Step Speed...

Wired Motor & Function Decoder that fits many N and HO Scale Locos.    Size: .55” x .4” x .148”    14mm x 10.23mm x 3.77mm    Z/N/HO Scale    1.0 Amp/1.5 Amps Peak    4 FX3...

Fits many 8-pin Medium Socket DCC-Ready HO locomotivesDigitrax 9-Pin Socket and P-HarnessMedium Plug with approximately.3.2" wires1.0 Amp/2 Amps Peak8 FX7 Functions, 300ma Output

Fits many 8-pin Medium Socket DCC-Ready HO locomotivesDigitrax 9-Pin Socket and PS-HarnessMedium Plug with approximately.1.2" wires1.0 Amp/2 Amps Peak8 FX7 Functions, 300ma Output

Series 6 Features2 FX3 Functions.418” x .621” x .107”10.63mm x 15.79mm x 2.72mmFits MicroTrains Line SW1500 units

Fits many older Atlas N locomotivesMobile DecoderDrop in “A1” Atlas light board replacement decoder1.0 Amp/2 Amps Peak4 FX3 Functions, 200ma output

Fits many Kato N-locomotivesDrop-in light board replacement decoder for Kato “K1” form-factor boards1.0 Amp/2 Amps Peak4 FX3 Functions, 200ma outputReplaces both the DN163K1C & DN163K1D

Fits many Kato N-locomotivesDrop-in light board replacement decoder for Kato “K2” form-factor boards1.0 Amp/2 Amps Peak4 FX3 Functions, 200ma output

Features:Board replacement decoder for MicroTrains FT.Golden-White LEDs for added realismDecoder Lock equippedSpecificationsCurrent Rating-Motor1 Amp Continuous/1.5 Amp Peak RatingSize2.158” x .58” x 0.135” (54.8132mm x 14.732mm x 3.429mm)

Fits Intermountain N scale SD40T-2 / SD45T-26 FX3 Functions3.5” x .367” x .135” w/ LED88.9mm x 9.32mm x 3.42 mmReplaces DN163I0▪FX3 Function outputs for prototypical lighting effects and on/off control:     Constant Brightness Lighting...

For Intermountain N scale FT A units with motor contact "shoes"6 FX3 Functions.472” x 2.165” x .098”11.98mm x 54.99mm x 2.4 mmReplaces DN163I1A▪FX3 Function outputs for prototypical lighting effects and on/off control:     Constant...

For Intermountain N scale FT B units with motor contact "shoes"6 FX3 Functions.472” x 2.165” x .098”11.98mm x 54.99mm x 2.4 mmReplaces DN163I1B▪FX3 Function outputs for prototypical lighting effects and on/off control:     Constant...

For Intermountain N scale F3 and F7 A & B units with motor contact "shoes"6 FX3 Functions.472” x 2.165” x .098”11.98mm x 54.99mm x 2.4 mmReplaces DN163I1C▪FX3 Function outputs for prototypical lighting effects and on/off control:   ...

For InterMountain N Scale F7A & B units with wired motors produced after Jan 20146 FX3 Functions.472” x 2.165” x .098”11.98mm x 54.99mm x 2.4 mmNOTE: Will not fit in new Intermountain FP7Replaces DN163I1D▪FX3 Function outputs for prototypical...

For Intermountain N scale FP7A and FP9A with motor contact "shoes"6 FX3 Functions.472” x 2.165” x .098”11.98mm x 54.99mm x 2.4 mmReplaces DN163I2▪FX3 Function outputs for prototypical lighting effects and on/off control:     Constant...

Fits Intermountain N Scale FP7A with wired motors produced after Jan 2014 6 FX3 Functions 472” x 2.165” x .098” 11.98mm x 54.99mm x 2.4mm   ▪FX3 Function outputs for...

Fits many Kato N-locomotivesDrop-in light board replacement decoder for Kato “K0” form-factor boards1.0 Amp/2 Amps Peak6 FX3 Functions, 200ma output

Fits many Kato N-locomotivesDrop-in light board replacement decoder for Kato “K0” form-factor boards1.0 Amp/2 Amps Peak6 FX3 Functions, 200ma output

Fits many Kato N-locomotivesDrop-in light board replacement decoder for Kato “K0” form-factor boards1.0 Amp/2 Amps Peak6 FX3 Functions, 200ma output

Fits many Kato N-locomotivesDrop-in light board replacement decoder for Kato “K0” form-factor boards1.0 Amp/2 Amps Peak6 FX3 Functions, 200ma output

TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work. The KA4-C will power an HO-Scale locomotive with headlights on for approximately 6 to 20 seconds (depending...

TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work.The KA5 includes an additional fifth supercapacitor, increasing the maximum capacity and peak charging...

Mobile DecoderFits Next18 socket locomotivesPlug-in Next18 connectorMotor drive at connector capacity6 FX3 Functions

Fits many HO locomotivesDigitrax 9-Pin Harness Socket1.0 Amp/2 Amps Peak8 FX7 Functions, 300ma Output

Fits E24 socket locomotivesN-Scale Mobile Decoder13 FX3 Functions, 200mA capacityMotor drive at connector capacity

Fits Many DCC-Ready N and HO Scale LocomotivesSize: 1.158” x .386” x .115”29.43mm x 9.81mm x 2.98mmN Scale1.0 Amp/1.5 Amps PeakFX3 Function outputs for prototypical lighting effects and on/off control:Constant Brightness Lighting with directional or...

TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work. The KA3-C will power an HO-Scale locomotive with headlights on for approximately 6 to 20 seconds (depending...

The T4-LED has added Blue and Black/White wires for the use of a KeepAlive device. The T4-LED is a multi-purpose HO-scale decoder. This decoder may be hard-wired or plugged directly into any locomotive with a 9-pin JST plug. The on-board resistors on...

Features:    Board replacement decoder for Atlas MP15 units    Golden-White LEDs for added realism    Decoder Lock equipped Don’t settle for a decoder without the latest features in your locomotive!Upgrade...

Fits Many Z, N and HO Locomotives with 6 Pin NEM 651 type plug    Size: .36” x .42” x .13”    9.05mm x 10.61mm x 2.67mm    N Scale    1.0 Amp/1.5 Amps Peak    2 FX3 Functions, 0.5...

All the great features and reliability of Digitrax decoders in a tiny package that will fit almost anywhere!0.55" x 0.28" x 0.128" (14 x 7.13 x 3.25 mm) Works with Z, N, and HO scale locos 1 Amp/1.25 Amps Peak Motor Current Rating Digitrax LocoMotion®...

Features:DH165K1A fits many Kato HO Diesel Locomotives.Compatible with Digitrax Sound BugDecoder Lock equippedSpecificationsCurrent Rating-Motor1.25 Amp (2.0 Amps Peak)Size2.877” x .667” x .173” (73.07mm x 16.93mm x4.4mm)InstallationBoard...

Digitrax LocoMotion™ SystemYour locomotives look like the real thing. The Digitrax LocoMotion™ System makes them run like the real thing, too!Torque Compensation for smooth as silk silent operation.128 Speed Step operation (14 or 28 steps can also be...

Features: Series 3 HO Plug ‘N Play Decoders with Integrated PlugCompatible with Sound Bug (Note this is not a plug n' play installation, wiring is required) Decoder Lock equipped SpecificationsCurrent Rating-Motor: 1.5 Amp (2.0 Amps Peak)Size: .67”...