GANZ ZC-DN5212NHA-BL 1/3" Color Hi-Res True D/N Dome, 540 TVL, 2.8-12mm Auto-Iris Varifocal Single Model for Surface and Flush Mount True Day/Night, 2.8mm-12mm Computar Lens 540 TVL Super High Resolution 12VDC or 24VAC Operation, Auto-Sensing UL Listed