Product DescriptionCOLOR IR DAY&NIGHT WATERPROOF CCD CAMERA (UM-818D/808D/898D/888D) 1. Model UM-818D/808D/898D/888D 2. CCD Type 1/3"CCD 1/4"CCD SHARP1/3"CCD SHARP1/4"CCD 3. Pixels PAL: 512HX582V PAL: 500HX582V 4. NTSC: 512X492V NTSC: 510HX492V 5. Scanning System PAL/NTSC 6. Horizontal Resolution 420TVL 7. Minimum Illumination OLUX(IR On) 8. S/N Ratio ≥48dB