Uniview Network Video Recorder: 4CH, 4-PoE, Ultra H.265/H.264, 4K HDMI/VGA Output - NVR501-04B-P4 Accessories_USB Sticks gain adjustable by web browser

gain adjustable by web browser Digital noise reduction 2D/3D DNR Smart IR Supported Flip Normal/Vertical/Horizontal/180°/90°Clockwise/90°Anti-clockwise Dewarping N/A HLC Supported BLC Supported Defog Digital Defog Intelligent Smart intrusion Prevention Support false alarm filtering: Line crossing detection

6mm (85° FoV) Night Vision Smart Dual Illuminators – IR + Warm Light (30 m) Deterrence Red/Blue Lights + Custom Siren/Voice AI Features SMD 3

Quick Pick (with AI NVR) Audio Built-in microphone Storage Max 512 GB MicroSD

making it ideal for perimeter protection and equipment monitoring in volatile environments

it supports ONVIF for cross-brand compatibility

Uniview Network Video Recorder: 4CH, 4-PoE, Ultra H.265/H.264, 4K HDMI/VGA Output - NVR501-04B-P4 Accessories_USB Sticks gain adjustable by web browserUniview NVR501 B P Series is a professional grade Network Video Recorder designed for high performance surveillance with built in PoE, powerful decoding, 4K HDMI output, and full compatibility with ONVIF and Uniview cameras. Ideal for small to medium surveillance setups, it offers ANR protection, cloud upgrades, smart VCA support, and stable recording up to 16MP. Key Features Supports Ultra 265 H. 265 H. 264 Efficient compression for reduced bandwidth