MK3.1 ARRI ALEXA MINI R/S For MK3.1 Receiver Use to trigger the run/stop function on ARRI ALEXA MINI Cameras with RS port. Hirose to 7-pin circular locking connector. 60cm Length. For ARRI ALEXA, please refer to MK3.1 ARRI R/S - For MK3.1 Receiver [11-1357]