... surveillance under the mine of low illumination. The camera adopts optical transceiver, CCD components, tight shot, ... ×80 mmSight glass dimensions75 mmWeight13 kgPerformanceParameterCamera parameterMonochrome , 1/3CCD , lowest degree of illuminationOptical transceiver parameterSingle mode / ... video, wave length 850nm / 1310 nmLens parameter1/3CCD, 3.5-8mm manual aperture lensPower supply moduleIN ...