120 Volt DC Motor Speed?? Control. From: KB Electronics, Inc. Based in Brooklyn, N. Rated at 2.5 Amps DC, 4.0 Amps AC. INPUT voltage of 120 Volts and a frequency of 50/60Hz. Shunt wound motors, and general purpose (AC/DC) motors. No other accessories included. If you have any problems, contact me for better yet. By writing message or in the comments. Below my videos on. Better and more powerful service options. This is very encouraging for me!