Why we need to go for CCTV for security system

Sony CCD Smallest Pinhole CCTV Camera Details

                   

Brand	iRobotics
Category	Spy & Surveillance Cameras
Other features	image Pick-up Device :1/3” Sony Exview Had Ccd Image Sensor effective Picture:pal : 500(h)x 582(v) Ntsc: 510(h) X 492(v) video Format :pal/Ntsc horizontal Resolution : 420tv Lines white Balance : Auto auto Electronic Shutter : 1/50(1/60),1/100,000(sec) s/N Ratio : More Than 48db minimum Illumination : 0.01lux/F1.2 video Output : 1.0vp-p . 75ohm . Bnc Operation consumption : 100ma power Supply : Dc12v
Warranty	1 Year Replacement Warannty