Horseman ISS Shutter Control Unit for Shutter ISS-G2 IS-0 Shutter Type 0, IS-1 Shutter Type 1, IS-1 Shutter Type 3, ISS Remote Release [5m] AC Power Type 0 and Type 1 shutter units are equipped with a Technika or board, and Type 3 is equipped with a Sinar board. Purchased new, the shutter units (0, 1, and 3) were tested for open, close, release, and aperture operation, and all functioned normally. The #0 and #1 shutter units have some hydrolysis on the surface rubber parts. Used with a Zero Halliburton 106C, and will be shipped in a ZERO case (with many scratches, but no major dents). The indentation where the instruction manual is placed fits a PHASEONE FLEX ADAPTER perfectly. Some items are discontinued and no longer available. If anyone needs them, please consider purchasing.