4-9mm Varifocal Lens (f/1.6). 1/3" CCD image sensor and 4-9 mm (f/1.6) varifocal lens. Bosch quality! 12 VDC / 24 VAC. Bosch VDC-445. The auto black feature increases the visibility of details in mist or fog conditions where the scene contrast is less than full range.
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