Use to trigger run/stop function with the RED EPIC DSMC2. IMPORTANT; If you are using the 'RED DSMC2 Base Expander' - this module works on the older RED trigger protocol and you will need a our MK3.1 DSMC cable to control runstop. With all other DSMC2 RED I/O modules, you will need this MK3.1 DSMC2 cable. Hirose to LM.00B 60cm Length Connect directly to the RED DSMC2's SYNC port