Check the listing for details. TCS ASD4 ~ N Scale ~ DCC Drop-In Motor Decoder For Atlas Locomotives ~ 1279. Condition: New. Listed at 47.52 USD. Iron Planet Hobbies TCS ASD4 Drop-in Decoder for Atlas Locomotives 1279 The ASD4 is a N-scale drop-in decoder for Atlas locomotives. Examples include the following:Atlas: GP7/GP9, GP15, GP30, GP35 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:Decoder will automatically detect DC power. You can also configure how your lighting effects function on DC. RailCom®:This feature allows the decoder to talk to the command station. RailCom supports expansion for new features. Variable Momentum:Allows you to make custom acceleration and deceleration curves. LED Support:This product does not require external resistors when connecting LED's. Incandescent Bulb Support:This decoder can be used with 12 Volt bulbs. Function Remapping:Buttons 0 through 12 may be used to control the lighting functions of this decoder. Programmable Lighting Effects:Choose from 20 separate user-programmable lighting effects! Dimmable Brightness:Configure multiple different brightness levels for your LED's or incandescent bulbs. Decoder Lock:Feature which prevents accidental/unwanted programming while activated. Airwire™ Compatible:Fully compatible with Airwire™ operation. User-Loadable Speed Tables:Configure custom speed curves and set speed limits. Interface Type: Drop-InDimensions (L x W x H): 2.309" x 0.355" x 0.089" or 58.65mm x 9.02mm x 2.26mmScale: N ScaleContinuous/Peak: 1.0/2.0 AmpTotal Functions: 4Function Rating: 80 mA12V Outputs: 2LED Outputs: 2Onboard LEDs: 2 We are an authorized TCS dealer. Thanks For Looking!