This is the HO Scale 16-Bit Universal EMD 567 Sound Decoder from the Model Rectifier Corporation. FEATURES: 1-Prime mover sound 16-bit "Brilliance" sound 16 levels of sound volume Sound with functional dynamic braking Sound with functional service braking Air compressor with prime mover RPM option 1.5 Amp capacity 4 Horns 2 Bells 28 NMRA accessory functions Supports full readback of all CV"s Supports custom speed tables Excellent slow speed control and Adjustable Back-EMF Speaker included tion instructions INCLUDES: One 16-Bit Universal EMD 567 Sound Decoder REQUIRES: Basic electrical knowledge & soldering skills SPECS: Gauge: HO 1/87 COMMENTS: Due to small parts that could cause a choking hazard please keep away from children 3 years of age and younger