Exposure Synchronization Box. ESYN-2000H, P/N 1704008. Unit has a USB cable and DB9 port, and says communication by Bluetooth.
I have no history on this item and a note on the unit says "PARAM FAILURE". I believe it was made by DR/DRGEM, see my other listings for similar sync boxes.
Condition: Untested. Sold as shown, please see photos.
