The benefits of the M24A are:

• Totally compatible with your current
   M24 scanning heads.
•  More powerful lasers.
•  Improved sensitivity to the laser spot
   while decreasing the sensitivity to
   the ambient light.
•  Improved performance on steep wane.
•  Improved performance on dark
   wood surfaces.
•  Scan rate increased from 1.0 kHz
    to 1.5 kHz.