This Single Type Nikonos Bulkhead Strobe Connector from Aquatica is compatible with select Aquatica underwater housings for Nikon cameras. Please see the list below for compatibility. Manual and TTL exposure control are possible with a strobe and sync cord and the appropriate hot shoe assembly and switchboard circuits, all of which are available separately. TTL exposure control can be achieved with a compatible housed flash or third-party TTL converter. The connector has 6 pins for attachment to the switchboard inside the housing. The bulkhead itself is attached using a nut that threads from inside the housing. This strobe connector serves as a spare or replacement for the one that came installed in the housing.