Professional version, 8 AV input/16 AV output, software settings.
LED display and 4 buttons for setting, each operation.
Each AV input (8) could set up "1-16" AV output.
Built in memory function, no need resetting after power disconnection.
Channel 16 including extra "switcher output" function.
DWELL time adjustable at switcher mode (1~30 seconds)