Dahua IPC-HFW8449J-Z-2712-SC IP camera 4 MP, 2.7–12 mm, self-cleaning, PoE

A built-in wiper cleans the front glass and sprays fluid on it before each wipe. Cleaning can be started manually or on a schedule. The tank holds 2.6 litres, and according to Dahua one fill lasts about three years with weekly cleaning. An electrode probe monitors the fluid level, and the camera raises an alert when the tank is empty or running low. The glass coating reduces how much dust and dirt sticks to it in the first place.

The 1/1.8″ CMOS sensor and F1.2 aperture gather a lot of light, which helps at dusk. The camera delivers 4 MP at 2688 × 1520, and 140 dB WDR balances strong backlight, for example in a gateway or when looking out of a warehouse door. The field of view can be set from a wide 92.6° to a narrow 48°. At the wide end the camera detects a target at up to 70.9 m, at the tele end at up to 128.7 m.

The illuminator combines IR LEDs with warm light: Dahua quotes up to 60 m for IR and up to 40 m for warm light. PDS heating switches on according to the ambient temperature and keeps rain, snow and fog off the image. A wraparound sunshield reduces dust and rain on the window and blocks stray light from outside the field of view. IP67 means the housing is fully dust-tight and survives temporary immersion in water.

The deep-learning algorithms of the WizMind series support face detection, video metadata and perimeter protection. Video metadata detects and tracks people, motor vehicles and non-motor vehicles and saves snapshots with their attributes. Perimeter protection distinguishes humans from vehicles, so tripwire and intrusion rules raise far fewer false alarms. The camera also detects abandoned and missing objects, which is useful in lobbies and loading areas.

Two microphones and a speaker let you talk through the camera, for example to warn an intruder. There is an RCA audio input and output, two alarm inputs, two alarm outputs and RS-485. Power comes over PoE or from a 12 V adapter, and the camera itself supplies 12 V to an accessory (up to 165 mA). A built-in level shows the tilt while you mount it. The wall-mounted housing weighs 3.9 kg and measures 217.1 × 254.8 × 274.9 mm.

Industrial and logistics sites where cameras sit in dusty yards; construction sites and farms where cleaning the glass by hand is a chore; operators of tunnels and car parks who need long detection range and reliable people and vehicle classification; and installers building a system on Dahua DSS or SmartPSS Lite who want to cut maintenance visits.