I was given one of these today, but can't find a manual anywhere.\nThis doesn't look promising for off-camera flash because in Manual\nmode there is no power adjustment. But as an automatic thyristor\nflash, it might actually work on-camera as a poor man's TTL.\n\nFirst things: I measured the voltage between the center contact\nand the shoe shell contact, and it's 9.5V on my R/S meter, which\nreads a bit high. So probably 9V. Does that sound safe for a Canon\nXT?\n\nI assume the "DM/C" module means it fit FD, or whatever the Canon\nfilm camera flash standard was in the early '80s. It has two\ncontacts in addition to the center contact. So I assume the XT\nwould treat it like a manual flash.\n\nThe flash has three manual zoom settings - W, N, and T. But there\nare two other settings. One sets the ASA (25 to 800), and the\nother selects between M(anual) and one of three colored dots -\norange, green and red. I believe the dots are related to the\nthyristor function, but I don't know in what way.\n\nAlso there's a green LED that lights up for a second when I trigger\nthe flash in any of the dot settings, but not in M mode. I'm not\nsure what the LED indicates.\n\nWell, if anyone has any explanations, or a link to the manual, or\nwarnings, please post a response. Thanks very much.