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Digitrax DH165Q1 1.25 Amp 6 Function HO DCC Decoder - Board Replacement for QSI HO
Manufacturer: Digitrax (Made in USA)
Part Number: DH165Q1 (245-DH165Q1)
Condition: New
Expected Price: 🇨🇦 $31.88 (Plus applicable taxes)
☑️  This item is not currently in stock, but should be available to order.
DH165Q1 fits Atlas, Intermountain, LifeLike & Other factory sound-equipped HO Locomotives.

Compatible with Digitrax Sound Bug.

Decoder Lock equipped

QSI-style PCB replacement Plug N’Play decoder-
Allows replacement with new technology downloadable SFX SoundBug modules
Accepts Plug-in SFX SoundBug sound modules
Excellent power management-
Booster or Programmer overloads
Regulated Headlights: convenient no-resistor install of LEDs and lamps.
Digitrax LocoMotion® System-
Your 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 used).
Momentum with acceleration and deceleration.
Normal Direction of Travel is user selectable.
3 Step Speed Tables set start, mid and max voltage for custom control.
28 Step Speed Tables with 256 level resolution for precise control.
Scalable Speed Stabilization with simple setup & 1024 level resolution.
SuperSonic motor drive for silent operation.
FX3 Functions for prototypical lighting effects:
Constant Brightness Lighting directional or independent control.
Realistic Effects like Ditch lights, Mars lights, strobes, and many more.
Dynamic and Static Qualifiers operate functions based on direction, F0 on or off, loco direction and F0, and whether loco is moving.
Function Remapping for custom function setup.
Master Light Switch turns off all lights & functions with one keystroke.
Advanced Consist Function Controls
Transponder equipped ready for transponding on your layout.
Compatible with digital surround sound systems
All Mode Programming with Operations Mode Read Back-read back CV values right on the mainline.
Decoder Factory CV Reset with or without speed table initialize.
Motor Isolation Detection prevents damage to your decoder.
Basic, Advanced & UniVersal Consisting
2 Digit and 4 Digit Addressing


Current Rating-Motor
1.5 Amp (2.0 Amps Peak)
2.877” x .667” x .173” (73.07mm x 16.93mm x 4.4mm)
Board Replacement
Function Outputs
Function Type
Series 4
For Use With
Sound Bug Sound Only Decoder
UPC: 652667050531