SM4 Manual by MRM-Racing V3.0
Pin out when using Hall or Optical trigger
Pin out when using inductive trigger
SM4 pin Name Colour
Pin 11 O/P 8v Trigger Supply (for Hall Effect trigger) Red/Black
Pin 25 I/P Cylinder + ve (signal Hall or Optical trigger) Red
Pin 26 I/P Sync + ve (signal Hall or Optical trigger) Red
Ground Hall trigger using sheild ground
SM4 pin Name Colour
Pin 25 I/P Cylinder +ve (positive, +ve for magnetic trigger) Red
Pin 40 I/P Cylinder –ve (negative, -ve for magnetic trigger) Black
Pin 26 I/P Sync +ve (positive, +ve for magnetic trigger) Red
Pin 41 I/P Sync –ve (negative, -ve for magnetic trigger) Black