SD50225U-HNI (00001561)25x optical zoom, Starlight, H.265, IVS, Auto-tracking, -40°C~60°C wide temperature range, IP67, IK10, POE+, Max 500 °/s pan speedhttps://www.dahuasecurity.com/asset/upload/uploads/soft/20200306/Network-Speed-Dome--PTZ-Camera-Web-3.0-Users-Manual_V2.0.031.pdf