Dahua WizSense Dome IP security camera IPC-HDBW2841R-ZAS-27135 — 4K (3840×2160), 2.7–13.5 mm varifocal, ceiling/wall, indoor/outdoor

The Dahua WizSense Dome IP security camera IPC-HDBW2841R-ZAS-27135 is a wired 4K (3840×2160) dome camera designed for indoor and outdoor surveillance. Built on Dahua's WizSense platform with an independent AI chip and deep learning algorithms, this model provides human and vehicle classification, video motion detection and long-range IR night vision. The camera features a 1/2.7" CMOS 8 MP sensor and a 2.7–13.5 mm varifocal lens with a wide horizontal field of view, and supports ceiling or wall mounting with a vandal- and weather-resistant dome housing.

Advantages

The camera delivers 4K resolution for detailed image capture while using H.265/H.264 compression to reduce bandwidth and storage requirements. Built-in AI functions such as SMD Plus enable accurate detection and classification of people and vehicles, reducing false alarms and simplifying event search. The unit supports PoE and 12 VDC power options for flexible installation, and features IP67 and IK10 ratings for reliable outdoor performance and vandal resistance. Additional features include up to 40 m IR illumination for night surveillance, on-board MicroSD support, and multiple abnormality detection alerts.

Key specifications

• Sensor: 1/2.7" CMOS, 8 MP (3840 × 2160)
• Lens: 2.7–13.5 mm varifocal, horizontal view approx. 113°–31°, vertical approx. 58°–18°
• Resolution and frame rate: up to 3840 × 2160 @20 fps; 2688 × 1520 @25/30 fps
• Video compression: H.265, H.264 (SMART H.264+/H.265+ supported)
• Night vision: IR illumination up to 40 m
• AI features: Human and vehicle classification, SMD Plus, intrusion and tripwire
• Mounting: Ceiling or wall
• Connectivity: Wired Ethernet LAN, PoE support; 12 VDC input option
• Storage: MicroSD card support (up to 256 GB)
• Protection: IP67 weatherproof, IK10 vandal-resistant
• Physical: Dome form factor, white color, weight approx. 0.51 kg

How to use

Install the camera on a suitable ceiling or wall surface using the supplied mounting template and hardware. Connect the device to your PoE-enabled switch or provide 12 VDC power and connect to the network via Ethernet. Configure basic parameters using Dahua configuration tools or your VMS/NVR: set resolution and encoding profile, enable AI SMD Plus for human/vehicle filtering, and configure motion and alarm inputs/outputs if used. Insert a MicroSD card to enable on-board recording and confirm time, privacy mask and WDR settings to match the monitoring scene.

Recommendations

Position the camera to cover primary access points at a height that balances field of view and identification detail; use the varifocal lens to fine-tune framing. For reliable night surveillance, avoid pointing the IR illumination directly at reflective surfaces. Enable AI SMD Plus and tailored motion sensitivity to reduce false alarms in areas with regular environmental movement. Ensure firmware is kept up to date and protect network access with strong credentials and secure network configuration.