Hikvision 4K AcuSense Strobe Light and Audible Warning Fixed Turret Network Camera has high quality imaging with 8 MP resolution. Excellent low-light performance with powered-by-DarkFighter technology. Clear imaging against strong back light due to 120 dB true WDR technology. Efficient H.265+ compression technology. Focus on human and vehicle targets classification based on deep learning. Active strobe light and audio alarm to warn intruders off. Provide real-time security via built-in two-way audio. Water and dust resistant (IP67). Specification: Camera Image Sensor: 1/1.8-Inch Progressive Scan CMOS Min. Illumination Color: 0.003 Lux @ (F1.6, AGC ON), B/W: 0 Lux with IR. Shutter Speed: 1/3 s to 1/100,000 s. Slow Shutter: Yes P/N P/N. Wide Dynamic Range: 120 dB. Day and Night: IR cut Filter. Angle Adjustment: Pan: 0 deg. to 360 deg., tilt: 0 deg. to 75 deg., rotate: 0 deg. to 360 deg. Lens. Lens Type: Fixed focal lens, 2.8, 4, and 6 mm optional Iris Type Fixed Focal Length and FOV 2.8 mm, horizontal FOV 111 deg., vertical FOV 59 deg., diagonal FOV 131 deg. 4 mm, horizontal FOV 87 deg., vertical FOV 47 deg., diagonal FOV 102 deg. 6 mm, horizontal FOV 51 deg., vertical FOV 28 deg., diagonal FOV 60 deg. Aperture F1.6. Lens Mount: M12 DORI DORI 2.8 mm: D: 89.2 m, O: 35.4 m, R: 17.8 m, I: 8.9 m 4 mm: D: 99.4 m, O: 39.4 m, R: 19.9 m, I: 9.9 m 6 mm: D: 140.0 m, O: 55.6 m, R: 28.0 m, I: 14.0 m Illuminator Supplement Light Type IR IR Range Up to 30 m IR. Wavelength: 850 nm Smart Supplement Light Yes Visual Alarm Yes Video. Max. Resolution: 3840 × 2160. Main Stream: 50 Hz: 25 fps (3840 × 2160, 3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) 60 Hz: 24 fps (3840 × 2160) 30 fps (3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) Sub-Stream 50 Hz: 25 fps (640 × 480, 640 × 360) 60 Hz: 30 fps (640 × 480, 640 × 360).