Blackmagic Design GPI and Tally Interface

8 mechanical relay contact closures (up to 30V at 1A), used to send tally signals that indicate active program or preview status. 8 opto-isolated inputs triggered by connection to ground (max 5V at 14mA), allowing external control or monitoring. Connects to ATEM switchers via Ethernet (10/100 BaseT) with loop-through capability, enabling multiple interfaces to be used together for expanded tally outputs.  A USB 2.0 port is provided for configuration, firmware updates, and device management via Blackmagic’s ATEM Software Control utility. Comes with a 12V power supply and international socket adaptors to support global use.