1673 TCS Train Control Systems / K7D4 4-Function Drop-In- Fits Kato Siemens ACS-64 and EMD SDP40F (SCALE=N) Part # 745-1673

The K7D4 is a high - performance N - scale drop - in DCC decoder. It's a perfect fit for Kato N - Scale ACS - 64 and EMD SDP40F locomotives. With dimensions of 2.353' x 0.413' x 0.071' (59.77mm x 10.49mm x 1.81mm), it offers 1.0/2.0 Amp continuous/peak power. It has 4 total functions, each with an 80 mA rating, 2 12V outputs, and 2 onboard LEDs. This decoder features surface - mount LEDs for forward and reverse headlights and supports two extra light functions. Key features include Back EMF Load Compensation for excellent slow - speed control, Quiet Drive for buzz - free motor performance, and DC Mode with auto - detection and customizable lighting on DC. Other great features are Variable Momentum, Incandescent Bulb Support, Function Remapping, Programmable Lighting Effects, Dimmable Brightness, Decoder Lock, Airwire™ Compatibility, and User - Loadable Speed Tables.

Using the K7D4 decoder is easy. First, make sure your locomotive is the Kato N - Scale ACS - 64 or EMD SDP40F. Simply drop the decoder into the appropriate slot in your locomotive. When it comes to power, it can handle 1.0/2.0 Amp continuous/peak, so you don't have to worry about power issues. For lighting, you can use the Function Remapping feature to control the lights with buttons 0 through 12. And with Programmable Lighting Effects, you can choose from 20 different options. When using in DC mode, the decoder will detect the power automatically, but you can also set up how the lighting functions. You can adjust the speed with Variable Momentum and User - Loadable Speed Tables. Just remember to be careful when programming. You can use the Decoder Lock to prevent accidental changes. For maintenance, keep it clean and dry. Avoid exposing it to extreme temperatures. If you use incandescent bulbs, make sure they are 12 - Volt ones as the decoder is designed to support them.