USB 2.0 water-proof Wireless Web Ready DVR Security System w/ 4 Pack Highigh Resolution Indoor/Outdoor Night Vision Surveillance Cameras USB 2.0 output to PC and AV output to TV/Monitor;Bundle with security software;Image capture, and high speed MPEG4 real-time recording;Night vision CAUTION:1.The product is only suitable for PC with USB 2.0 port.It doesn't support USB 1.1.2.It only support Windows XP/2000/NT.3. General:Operating Temperature -10 ~ +50(Degree C) / +14~ +122(Degree F);Operating Humidity &lt;=85%RH Camera:Imaging Sensor Type:CMOS;Picture Total Pixels:PAL:720576 Pixels;NTSC: 720480 Pixels;Minimum Illumination :0Lux Attention: The operating frequency of our product is 2414MHz, 2432MHz, 2450MHz and 2468MHz.