... 2.4Ghz wireless camera kit 2> Four wireless camera supported 3> record videos on pc 4> IR Night Vision 5> USB2.0 Night vision wireless ... (NTSC), 352x288/704x576(PAL) standard resolutionsImage color adjustable for each channel, including contrast, lightness, hue and saturationMPEG4 ... , delete by date/time, cameraConvenient to extend system functions by software upgradeCPU and storage resources saving ...