Black Magic InterfaceDESCRIPTION GPI and Tally Interface connects to an ATEM switcher and provides 8 contact closure Tally outputs. Tallies will be displayed when connected to an ATEM switcher to indicate their on-air status and you can even connect multiple interfaces together to increase the number of tally outputs. FEATURES • 8 inputs / 8 outputs • Indicates on-air status • Contact Closure 25 pin D-type connector providing 8 opto isolated inputs and 8 relay contact closure outputs • Inputs Optical isolators triggered by connection to ground. Max 5V at 14mA. • Outputs Mechanical relay contact closure to ground. Max 30V at 1A. • Ethernet 10/100 BaseT with loop through for connecting to other ethernet enabled equipment • Computer Interface 1 x USB 2.0 high speed interface for configuration and firmware updates WHAT\'S IN THE BOX GPI and Tally Interface...