MRC #0001907 1.5 amp HO scale 16-bit DCC DC* drop-in diesel sound decoder. Replaces the factory installed circuit board (requires milling of the chassis weight) and includes an on-board speaker. Easy programming. Complete illustrated installation instructions included.

Designed to fit Atlas Alco S2 and S4 locomotives.

Features:

• 1.5 amp capacity
• 2 Synchronized 16-bit prime mover sounds with randomly associated locomotive sounds
• 28 accessory functions (F1-F28)
• Adjustable back EMF load control with ultra-slow speed control
• Directional lighting (F0) with sunny white LEDs
• User selectable 22 different horns and 8 bells
• Programmable individual sound volumes (16 levels)
• Programmable for either 2-digit (1-127) or 4-digit (1-9999) addresses
• Programmable start and top voltage
• Programmable acceleration and deceleration rates
• Programmable 14, 28/128 speed steps
• Advanced speed table control (CV67-CV94)
• Kick start voltage control (CV65)
• Supports read back address and CV value 
• Supports advanced consisting (CV19)
• Supports programming on the main (OPS mode)
• Compatible with NMRA DCC standards
• Complies with Part 15 of FCC**
• 18mm, 8-ohm on-board speaker included
• MRC warranty**

*Operation on a standard DC power pack gives you (last programmed) synchronized engine sound (only). To access all available sound functions with DC, use the MRC Tech-6 DC Sound Controller (sold separately). 

**See user guide for details.