A12E/A12S DSP controller 1. This is the original brand: RichAuto2. DSP controller for CNC router can be used without the computer3. suitable for 3 axis4. A112E/A12S the same as 0503. The function has improved, use in the same way, A12E/A12S have replaced 0503 from 2015   5. we have set up the English version before deliver … Read more