The red REMOTE doesn't have a very good range to do this effectively so I bought this unit. http://www.gentles.ltd.uk/gentwire/red.htm based on the suggestions on this board. I have it hooked up and wired correctly as the switch on my MX20 is engaging the red light on the gentwire unit however the camera is not recording. The companies directions in regards to the red scarlet are vague at best. I have the cable plugged into the sync connector on the red and I thought I had the settings right by looking at the red manual but I must be missing something. Here's the settings I have: GPIO sync - Pro I/O GPI> PRO I/O GPI A High - Record start GPI A low - Record Stop GPI B high - Record Start GPI B low - Record stop Keys>Key mapping>advanced Key source : Pro I/O GPI User Key: Pro I/O GPI high Key action: Record start Any thoughts?