Hikvision 8MP IR Fixed Turret Network AcuSense Powered by Darkfighter Camera Human and vehicle classification alarm 2.8mm lens Built-In Microphone IP66 12 VDC ? 25%/PoEHikvision 8MP IR Fixed Turret Network AcuSense Powered by Darkfighter Camera Human and vehicle classification alarm 2.8mm lens Built-In Microphone IP66 12 VDC ? 25%/PoE 3 year warranty.Empowered by deep learning algorithms Hikvision AcuSense technology brings human or vehicle target classification alarms to front- and back-end devices. The system can greatly reduce false alarms generated by targets other than humans or vehicles vastly improving alarm efficiency and effectiveness.??? 1/2 Progressive Scan CMOS??? 3840 ? 2160 @ 20fps??? 2.8/4/6 mm fixed lens??? 120dB WDR??? Powered by Darkfighter??? H.265+ H.265 H.264+ H.264??? Built-in micro SD/SDHC/SDXC card slot up to 256 GB??? Built-in microphone (optional)??? -I models: IP67 -IU models: IP66??? Human and vehicle classification alarm based on deep learning.FeaturesTypeT