This 2.8mm f/2.0 M12 3MP IR Lens for CV502-WPMB/WPM and the CV503 supports resolutions up to 3MP and incorporates an M12 lens mount. It maintains your CV502's and CV503's IP67 rating and can also be mounted on other available cameras (not included) that have an M12 mount. This 2.8mm f/2.0 lens features an IR-cut coating on the rear element that minimizes IR contamination, for a clean image.