Dahua HUM4231SP-L5-S3 2 MP Pinhole Network Camera, 2.8 mm

This 2 MP pinhole network camera uses a 1/3-inch progressive-scan CMOS sensor and a fixed 2.8 mm F1.6 lens. It records up to 1920 x 1080 and supports Starlight low-light imaging, 120 dB WDR, a built-in microphone and IVS intrusion and tripwire rules.

Camera and lens

• Sensor: 1/3-inch CMOS. Maximum resolution: 1920 x 1080. ROM: 128 MB. RAM: 128 MB. Scanning: progressive.
• Electronic shutter: automatic/manual, 1/3 s–1/100,000 s. Minimum illumination: 0.01 lux at F1.6 in colour and 0.001 lux at F1.6 in B/W, both at 30 IRE. Signal-to-noise ratio: >56 dB.
• Lens variant: L5-2.8 mm. Lens: fixed focal length, M12 mount, 2.8 mm, F1.6. Field of view: 95° horizontal, 52° vertical and 114° diagonal. Close focus: 1.1 m (3.61 ft). Iris: fixed.
• DORI distances with the 2.8 mm lens: detect 63.6 m (208.66 ft), observe 25.4 m (83.33 ft), recognise 12.7 m (41.67 ft), identify 6.4 m (23.00 ft).

Video and analytics

• IVS: intrusion and tripwire.
• Compression: H.265, H.264, H.264B and MJPEG on the sub stream; Smart H.265+ and Smart H.264+.
• Main stream: 1920 x 1080 at 1–25/30 fps. Sub stream: 704 x 576 at 1–25 fps or 704 x 480 at 1–30 fps. Two streams are supported; simultaneous frame rates are limited by total encoding capacity.
• Supported resolutions: 1080p 1920 x 1080, 1.3M 1920 x 960, 720p 1280 x 720, D1 704 x 576/704 x 480, VGA 640 x 480 and CIF 352 x 288/352 x 240.
• Bit-rate control: CBR/VBR. H.264 and H.265 bit rate: 3–6144 kbps.
• Day/night: colour or B/W. BLC and HLC: yes. WDR: 120 dB. White balance: automatic, natural, street lamp, outdoor, manual or regional custom. Gain: automatic/manual. Noise reduction: 3D NR.
• Motion detection: on/off, four rectangular regions. RoI: four regions. Rotation: 0°/90°/180°/270°; 90° and 270° are supported at 1080p or below. Mirror: yes. Privacy masks: four regions.

Audio, alarms and network

• Built-in microphone: yes. Audio compression: G.711a, G.711Mu, PCM and G.726. One RCA audio input and one RCA audio output.
• Alarm events: network disconnection, IP conflict, illegal access, motion detection, video tampering, tripwire, intrusion, audio detection, voltage detection and security exception.
• Network: RJ-45 10/100 Base-T. SDK and API: supported. Up to 20 users/hosts with 48 M total bandwidth. Storage: FTP, SFTP and NAS.
• Protocols: IPv4, IPv6, HTTP, TCP, UDP, ARP, RTP, RTSP, RTCP, RTMP, SMTP, FTP, SFTP, DHCP, DNS, DDNS, QoS, UPnP, NTP, Multicast, ICMP, IGMP, NFS, PPPoE and Bonjour.
• Interoperability: ONVIF Profile S/Profile T, CGI, P2P and Milestone. Browsers: IE, Chrome and Firefox. Management: Smart PSS, DSS and DMSS. Mobile clients: iOS and Android.
• Cybersecurity includes video, firmware and configuration encryption; Digest and WSSE; account lockout and security logs; IP/MAC filtering; X.509 certificate generation/import; syslog; HTTPS; 802.1x; and trusted boot, execution and upgrade.

Power, environment and construction

• Power: 12 V DC. Basic consumption: 1.2 W. Maximum consumption with H.265, intelligence and WDR enabled: 1.56 W.
• Operating and storage temperature: -40 °C to +60 °C (-40 °F to +140 °F). Operating humidity: up to 95%.
• Metal housing. Dimensions: 31.0 x 31.0 x 37.1 mm (1.22 x 1.22 x 1.46 in). Net weight: 81 g (0.18 lb). Gross weight: 138 g (0.30 lb).
• Certifications: CE-LVD EN62368-1, CE-EMC Directive 2014/30/EU, and FCC 47 CFR Part 15 Subpart B.