Outdoor conditions can wreck a dome camera, unless it has a high environmental rating and wide temperature range. The IQeye Alliance Dome exterior models have an IP66 environmental rating and wide temperature range. The models have die-cast metal construction and durable GE Lexan domes. Alliance Domes with H.264 and bi-directional audio are available from VGA all the way up to high-definition 2-megapixel resolution.