The AVSB2218Z is a 2 megapixel weather rated bullet camera. Utilizing the new HD-AVS technology allows for 1080p high resolution video and a 1000' functional distance. The AVSB2218Z is perfect for upgrading existing analog systems to a megapixel quality level. HD-AVS cameras are only compatible with HD-AVS DVR systems, and cannot be used with standard definition recorders. By adopting this latest technology, previously existing analog CCTV systems can rapidly be upgraded to high definition by replacing both cameras and recorders with HD-AVS products!