The GSC3620 is a weatherproof infrared (IR) ceiling-mounted dome IP camera with a 2.8mm-12mm varifocal lens. It’s variable focal lens makes it an ideal device for wide-angle monitoring of nearby subjects in environments such as building entrances, corridors, banks, hotels, retail stores and offices, as well as narrow-angle monitoring of far field subjects in environments such as streets, towers, ware houses, farms and etc. The electronic auto-focus capability ensures plug-and-play installation without requiring manual tuning or worry about loss of focus over time of operation.