HO Scale
Mobile Decoder with SoundFX v3
Drop-in light board replacement
1.0 Amp/2 Amps Peak
8 FX3 Functions, 200ma Output
8 Ohm 28 mm round speaker
330uF Capacitor

Fits Kato AC4400 or compatible HO locomotives
8 CV Selectable sound Schemes

Features:
- Digitrax SoundFX®v3 Sound System
Your locomotives will sound “in scale” like the real thing with SoundFX v3
Customizable with 16, 12 or 8 bit .wav file sounds
Works with all SoundFX 8 and 16 bit sound projects
Up to 6 simultaneous voices
Download sounds with a Digitrax Sound Programmer and SoundLoader II
16 megabit On Board Sound Memory
Cam input-synchronized steam-chuff option for steam locos
Scalable Speed Stabilization configured for sound operation

- SoundFX v3 does not require an external rate sensor to vary workload.
- Factory 8 Ohm 28mm round speaker .
- Smart Power Management- no more booster or programmer shutdowns!
- Program CVs with Digitrax Command Control, or compatible DCC system.
- Series 7 Enhanced Decoder Features.
- XF expanded function capability, allows user remap of function keys to sounds and function output leads.
- Works with PX112-2 Power Extender, up to 15V maximum on track.
- Digitrax FX3 Functions-Control lights and functions for prototypical lighting effects and on/off control.
- Onboard LEDs.
- Configured for 8 function output leads for LEDs.
- Configurable FX3 Pulse Function available on all function outputs.
- Digitrax LocoMotion® System – Lets your trains run like the real thing!
- 2 Digit and 4 Digit Addressing.
- Basic, Advanced & UniVersal Consisting.
- SuperSonic motor drive for silent operation.
- Direct and Operations Mode programming.
- Decoder Reset by CV8, with or without speed table reset.
- Transponder Equipped ready for transponding ID on your layout.
- Power-on Motor Isolation Protection, helps prevent damage to your decoder.
- DCC Compatible.
- FCC Part 15, Class B RFI compliant.
- Operates on DCC track voltage 9V minimum to 18V maximum.

Parts List:
1 SDXH187K1A Function Decoder with SoundFX® v3, with 8Ω 28mm round speaker and 330uF capacitor.
1 Instruction Sheet