4mm fixed focus cs lens with ir filter About 4mm fixed focus CS LENS About IR FilterDiameter of aperture : 34.3 x 17 x 7.8mmWhile power is turned off, automatic return by coil.While power is turned off, the IR cut filter (blue) is positioned at the aperture.Working voltage : min 5.0V.Working posture: Operates normally at every posture.When voltage is turned off with the IR Cut filter (clear) ...