I would like to know if the screw holes are all the same, so that you can use the 203 for all dahua turrets.
Edit:
205 shares one ring with 204 and one with 205. 204 and 205 are mutually different.
The 205 shares one ring with the 203 at 84mm diameter.
The 205 shares one ring with the 204 at 68.5 mm diameter.
205 is the most compatible of the three (as far as screw holes are concerned) and also the widest.
As I do not yet own a 205, I can't tell if a fitting mounting screw ring diameter automatically meant the cam will fit.
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