Overview

The LTD8504D-ST is a compact 1U rack-mount 4-channel hybrid DVR that supports both traditional analog and IP cameras, offering flexible surveillance for small to medium systems. It uses efficient H.265 Pro+ video compression to reduce storage and bandwidth needs, can encode up to 4K/8 MP on one channel or 3K/5 MP on other channels, and accepts up to 8 IP camera inputs alongside the 4 analog inputs. The recorder includes smart features like facial recognition on 2 channels or perimeter protection on 4 channels using deep learning analytics, plus motion detection, two-way audio support, and a Direct Search function to quickly find important events in recorded video. It has a single SATA bay for a large hard drive (typically up to ~10 TB), making it suitable for reliable local storage of continuous or event-based video.

Features 

• Deep Learning Video Analytics: Supports 2-channel facial recognition or 4-channel advanced perimeter protection using deep learning algorithms — useful for smart event detection and reducing false alarms.
  

• Direct Search Technology: Built-in Direct Search for quicker retrieval of specific video clips.
  

• Recording & Inputs:

  • 4 analog channels (with support for HDTVI/AHD/CVI/CVBS) plus up to 8 IP camera inputs (each up to 8 MP).
    

  • Adaptive 5-in-1 signal input supports multiple camera formats.
    

  • Encoding up to 4K/8 MP @ 8 fps on one channel or 3K/5 MP @ 12 fps

• Audio: Supports two-way audio on all channels via HDTVI two-way audio technology.

• Storage: Single SATA HDD bay (supports up to ~10 TB typically, though check exact spec sheet).

• Smart Playback & Motion Detection: Includes motion-based recording with smart search capabilities.

• Form Factor: 1U rackmount DVR chassis. 

• Video Compression: H.265 Pro+ / H.265 for efficient storage and bandwidth use.

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