This is one of our most popular and highly recommended color dome cameras for a number of reasons: 1.It is dc power supply and has auto iris, auto gain control and auto white balance. 2.Built with a 1/ 3" Sony Color CCD image sensor, 3.540/ 480 TV lines high resolution camera with a 0.0 LUX rating. 4.ir led technology improve effectively leds lifetime and brightness for 40m distance. 5.The 4.6.8.12 mm optional fixed lens gives you the flexibility you need to adjust the camera based on your specific needs.