Wave features a 6 pin UART connector that can act as a shutter release with Movi Pro, and in the future will offer full camera control for Movi Pro and via API.
The remote control cable is available on the Freefly Store. You can use this now for remote start/stop on your Movi Pro or you can use it as a donor cable to wire up custom shutter releases for other systems
To make a custom cable use a JST GH 6PIN CONNECTOR GHR-06V-S 1 and follow the pinout in the wiring diagram below.
For a simple remote trigger you need to short Ground and LANC