Product DescriptionColor IR Dome Camera (UM-811R/801R/891R/881R) Model UM-811R UM-801R UM-891R UM-881R CCD Type 1/3"CCD 1/4"CCD SHARP1/3"CCD SHARP1/4"CCD Pixels PAL: 512HX582V PAL: 500HX582 NTSC: 512X492V NTSC: 510HX492V Scanning System PAL/NTSC Horizontal Resolution 420TVL Minimum Illumination 0 Lux IR ON S/N Ratio ≥48dB