... 420TVL HAD CCD image sensor;2, Built-In-Zoom Lens;3, High speed in auto focus;4, Far distance and high quality ... ,Type including ordinary, day & night,D/N infrared auto zoom camera.Technical Specification: ModelNZ-227NColorColor to B&WImage Sensor1/4”Sony ... (W) x 60(H)mm private housing 27X optical zoom camera,auto zoom color ccd camera,BLC,AWB,RS485 control