... size numerical control devices such as curving machine, CNC machine, computer embroider machine, packing machine and etc.FEATURESl High performance, low pricel ... , can control the lathe and milling machine to work the input part can connect to the mechanical switch , groove optocoupler, proximity ... presetter etc. the interface board P1-P17 port correspond to the pin1-17 of the PC parallel port , the ...