11040-HSS-B TTL Converter for NIKON for ISOTTA housings of former years, including 2 pcs Optical Bulkheads

#11040-HSS-B Optoelectronic TTL Converter for NIKON for ISOTTA housings of former years, including 2 pcs Optical Bulkheads with built-in LED. Compatible underwater strobes: Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-D3 DUO / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). Two optional ISOTTA electric bulkheads are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta special shape commutation board. Such type of Isotta housings has a special curved shape milled recess in metal, the same curved shape has the TTL-converter board. Check your housing regarding such installation version before TTL system purchasing.