Hikvision 4MP AcuSense IR Varifocal Turret Network Camera Powered by Darkfighter Audio/Alarm I/O 2.8 to 12 mm 12 VDC ? 25% / PoE 3 year warrantyHikvision 4MP AcuSense IR Varifocal Turret Network Camera Powered by Darkfighter Audio/Alarm I/O 2.8 to 12 mm 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.High quality imaging with 4 MP resolutionExcellent low-light performance with powered-by-DarkFighter technologyClear imaging against strong back light due to 120 dB true WDR technologyEfficient H.265+ compression technologyFalse alarm reduction through human and vehicle target classification based on deep learning-S: audio and alarm interface availableWater and dust resistant (IP66) and vandal-