TP-LINK 4 CHANNEL POE NETWORK video RECORDER 4 FE POE+ PORTS - VIGI NVR 1004H-4P with 4x TP-Link VIGI C44 0-4 Indoor Full Color Turret 4MP | H.265+ Network Camera 4 mm Fixed Lens CAMERA Image Sensor: 1/3” Progressive Scan CMOS Lens: Fixed focal lens (2.8 mm / 4 mm) Aperture: 2.8 mm: F1.6 ,4 mm: F1.6 Lens Mount: M12 Viewing Angle: (2.8 mm) Horizontal FOV: 102°, vertical FOV: 55°, diagonal FOV: 122° (4 mm) Horizontal FOV: 79°, vertical FOV: 43°, diagonal FOV: 93° Day/Night Mechanism: IR Cut Filter IR Working Distance: 30m Illumination Distance: 30m (LED) Minimum Illumination: 0 lux with IR/white Light Pan/Tilt Range: Pan: 0° to 360°, Tilt: 0° to 85°, Rotate: 0° to 360° Digital Noise Reduction: 3D DNR WDR: DWDR NETWORK Security: Password Protection, HTTPS Encryption, IP Address Filter, Digest Authentication Protocol: TCP/IP, UDP, ICMP, HTTP, HTTPS, DHCP, DNS, RTSP, NTP, UPnP UDP, SSL/TLS API: ONVIF Simultaneous Live View: 3 Main Streams & 3 Sub-Streams