Dahua NVR2104-P-4KS3 – 4-Channel IP NVR, 4× PoE, up to 12 MP, 4K HDMI

The Dahua NVR2104-P-4KS3 is a compact 4-channel network video recorder from the Lite series (NVR2000-4KS3) in a 1U enclosure with a built-in 4-port PoE switch. Cameras are connected and powered over a single cable, so the recorder is an excellent choice for homes, shops, offices and other small sites. It supports IP cameras up to 12 MP, 4K HDMI output and SMD Plus AI analytics that filter out false alarms.

Key features

• Channels: 4 IP channels, supports cameras up to 12 MP (12/8/6/5/4/3 MP, 1080p, 720p …)
• Bandwidth: 80 Mbps incoming, 80 Mbps recording, 60 Mbps outgoing
• Video compression: Smart H.265+, H.265, Smart H.264+, H.264, MJPEG
• Decoding: AI disabled: up to 1× 12 MP@30 fps or 6× 1080p@30 fps; AI enabled: up to 1× 8 MP@30 fps or 4× 1080p@30 fps
• Video outputs: 1× HDMI (up to 3840 × 2160) and 1× VGA (up to 1920 × 1080), 1/4 split display
• AI by recorder: 4-channel SMD Plus (human and vehicle classification, false alarm filtering)
• AI by camera: perimeter protection (tripwire, intrusion) and SMD Plus
• PoE: 4 PoE ports, 36 W total budget, up to 25.5 W per port
• Storage: 1× SATA HDD bay, up to 20 TB
• Audio: 1× RCA input, 1× RCA output (G.711a, G.711u, PCM, G726)
• Network: 1× RJ-45 10/100 Mbps; third-party cameras via ONVIF
• Interfaces: 2× USB 2.0 (rear)
• Power: 53 V DC; recorder consumption <10 W (without HDD)
• Dimensions and weight: 204.6 × 206.4 × 45.6 mm, 0.48 kg

The NVR2104-P-4KS3 combines a built-in PoE switch, Smart H.265+ compression that saves disk space, and smart analytics. This makes it a reliable choice for small Dahua or ONVIF video surveillance systems.