This Hikvision Anti-Corrosion Bi-Spectrum Network Bullet Camera features a 15mm thermal and 6mm optical focal length. It's designed for perimeter protection and fire prevention applications in critical infrastructures such as airports, railways, power stations, and 4S stores. The camera uses a vanadium oxide uncooled focal plane sensor that enhances thermal image quality. The camera is finished with an anti-corrosion coating to meet anti-corrosion use requirements.