Connects SMC-1, EMC-1 and AMC-1 to RED Weapon. Provides camera REC start/stop function and tally. Length: 2x 0.5m/1.6ft Note: Use cable only in combination with the RED DSMC² Jetpack/V-Lock I/O Expanders. Do not use it with RED DSMC² Base Expander and RED EPIC! Please read the RED Weapon manual carefully before using this product and be sure of following camera settings on RED Weapon: Menu > Settings > Setup >GPIO Synch: choose “Brain GPIO” SW In High: “Key Disabled” SW In Low: “Record: Toggle” GPO Function: “Recording Indicator Out”