Merlin Plus Remote

This is equivalent to using the foot pedal provided with Merlin Plus.
The Options control toggles between 5 display modes listed below:
- Full CCTV image
- Full computer image (if VGA signal valid)
- Split screen between computer and CCTV image (if VGA signal valid)
- Full image with external camera (if camera attached)
- Split screen between computer image and external image (if camera attached)