The K1D4 is a 4-function N-scale drop-in decoder designed for Kato and Athearn locomotives. Examples include the following:

Compatible Locomotives:

Kato:

• C30-7
• SD40
• SD70/SD70M/SD70MAC
• GE C44-9W
• GE AC4400W

Athearn:

• F45

See the Installation Pages for a full list of compatible engines!

Important Note:

This version of the K1D4 has copper tabs installed, which slip over the motor contacts on the locomotive. If your locomotive uses wires, see the "-NC" version.

Key Features:

• 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: Automatically detects DC power. You can also configure how your lighting effects function on DC.
• RailCom®: Allows the decoder to communicate with the command station. RailCom supports expansion for new features.
• Variable Momentum: Enables custom acceleration and deceleration curves.
• LED Support: No external resistors required when connecting LEDs.
• Incandescent Bulb Support: Compatible with 12 Volt bulbs.
• Function Remapping: Buttons 0 through 12 can control the lighting functions of this decoder.
• Programmable Lighting Effects: Choose from 20 user-programmable lighting effects!
• Dimmable Brightness: Configure multiple brightness levels for LEDs or incandescent bulbs.
• Decoder Lock: Prevents accidental or unwanted programming while activated.
• Airwire™ Compatible: Fully compatible with Airwire™ operation.
• User-Loadable Speed Tables: Configure custom speed curves and set speed limits.

Specifications:

• Interface Type: Drop-In
• Dimensions (L x W x H): 2.705" x 0.38" x 0.059" (68.7mm x 9.64mm x 1.5mm)
• Scale: N Scale
• Continuous/Peak Current: 1.0/2.0 Amp
• Total Functions: 4
• Function Rating: 80 mA
• 12V Outputs: 2
• LED Outputs: 2
• Onboard LEDs: 2