The NCD.EXE allows you to control NCD products directly from a command line interface in DOS. NCD.EXE does NOT require 3rd party tools or components, as it speaks directly to DOS. With NCD.EXE, you may test and control an NCD device directly without programming. It can also be used in a batch file to do complex jobs or called in your own program. NCD.EXE is a free distribution for use ONLY with NCD products. NCD.EXE does not currently support NCD Graphic Display devices. Support Devices: ASEL 8S2S AVS4X1 E3C IOADR8X IOADR16X IOCONTROLLER MSERVO PWM8X R16X R1X R2X R32X R4X R8XPRO SSR8X SERVOCONTROLLER STP Follow the link and free download NCD Command Tool for dos now.