... Leds effective distances up to 50m 1. 1/3” SONY CCD, color definition 420 TV lines;2. Build-in high effective IR ... Backlight compensation;6. External sun shield used for outdoor, all-in-one structure, suitable for all kinds of indoor/outdoor dark light ... dust-proof.8. Easy disassembly, installation and maintain.9. Suitable for 24 hours indoor surveillance area, as supermarket, hotel, school, uptown10 ...