The Bosch CS-Mount 2.7-13mm 3MP Varifocal Lens is designed for use with a variety of cameras. The P-iris control connection is a four-pin standard plug that fits directly into the camera's iris output. This lens delivers impressive optical quality due to its 3MP resolution, contrast reproduction, and coating. The mechanical construction is designed to withstand both frequent iris control operations and the environmental stress of security installations. It provides long and reliable operation with no maintenance.