The DM-CO-624 camera gives you 580 razor sharp lines of color resolution for a crisp and clear picture. Impressive 0.05 low light lux rating which leads to its superb night time performance ability. Also, the noise reduction function helps to improve the total DVR recording time by up to 30%. The 1/3 inch density Super HAD CCD II and digital processor permits high quality pictures to be captured in very low light conditions. It detects the motion of objects without the use of a sensor Another feature of the DM-CO-624 is its one power connection ability which allows it to configure itself automatically to a power source of either 12VDC or 24VAC. The AC line lock is standard with all cameras in 24VAC operations.