DS-6904UDI

Manufacturer reference

Manufacturer details describe the cited version. Confirm the exact unit and intended system.

Video output

HDMI Output Channels

4-ch

HDMI Output Resolutions

4K: 3840 × 2160@30 Hz (eligible HDMI ports require confirmation); 1080p: 1920 × 1080@50/60Hz; WSXGA: 1680×1050/60Hz; UXGA: 1600 × 1200@60Hz (for odd interface only); 720p: 1280 × 720@50Hz/60Hz; SXGA: 1280 × 1024@60Hz; XGA: 1024 × 768@60Hz

VGA Output

Not provided

BNC Output

2-ch, 1 DB 15

Video input

VGA/DVI-I Input Resolutions

WSXGA: 1680×1050/60Hz WXGA: 1440×900/60Hz WXGA: 1280×800/60Hz, 1366×768/60Hz, 1080p: 1920 × 1080@50/60Hz UXGA: 1600 × 1200@60Hz XVGA: 1280 × 960@60Hz 720p: 1280 × 720@50Hz/60Hz SXGA: 1280 × 1024@60Hz XGA: 1024 × 768@60Hz

Decoding

Decoding Channels

32-ch

Decoding Capability

12MP@20fps:4-ch 8MP@30fps: 8-ch 5MP@30fps: 12-ch 3MP@30fps: 20-ch 1080p@30fps: 32-ch

Split Screen

1/4/6/8/9/12/16/25

Interfaces

Network Interface

2, 10/100/1000 Mbps self-adaptive management network interface 2, 10/100/1000 Mbps self-adaptive Ethernet interface 16, 10M/100Mbps self-adaptive Ethernet interface

Serial Interface

1 RS-232 (RJ45), 1 RS-485

Two-Way Audio In

1-ch, 3.5 mm connector (2.0 Vp-p, 1 KΩ)

Two-Way Audio Out

1-ch, 3.5 mm connector (2.0 Vp-p, 1 KΩ)

Audio Output

4-ch, 1 DB 15

Alarm Input

8-ch

Alarm Output

8-ch

General

Power Supply

220 VAC

Power Consumption

≤ 70 W

Working Temperature

-10 °C to +55 °C (14 °F to 131 °F)

Working Humidity

10% to 90%

Dimensions (W × D × H)

440 × 311 × 44.5 mm (17.32 × 12.24 × 1.75 inch)

Weight

≤ 5.2 kg (11.4 lb)

Functions

Video Compression

H.265+/H.265, H.264+/H.264, Hik264, MPEG4, MJPEG

Audio Compression

G.722, G711A, G726, G711U, MPEG2-L2, AAC

Encapsulation Formats

PS, RTP, TS, ES, HIK

Decoding Modes

Active and passive decoding

Video Stream Access

URL and RTSP

Two-way Audio Client

Supported via client software

Multi-screen PC Control

Requires a PC with RSC server installed

Selection notes

• The documented specifications apply to the cited manufacturer version. Confirm the supplied hardware, firmware and accessory configuration.
• 4, 2019-07-02; exact unsuffixed model column. Specifications follow Hikvision DS-6900UDI series datasheet V2.4, 2019-07-02; exact unsuffixed model column. Exact original model and hardware suffix retained. Confirm supplied regional unit and accessories. Cover specifies even HDMI interfaces while the table specifies odd interfaces. No eligible 4K port numbers assigned. The specification maximum row says 12 MP while capability rows and the cover list 24 MP. Maximum and 24 MP performance remain unconfirmed. Wi-Fi appears in the rear-interface legend for larger models without supported radio standard, supplied module or operating mode. No wireless connectivity specification inferred. HDD indicators are marked reserved; no installed storage, recording capacity or drive-bay capability inferred.
• Readers, locks, power supplies, batteries, licences and other accessories are not assumed to be included. ISD confirms specification, compatibility, supply, price, lead time and local warranty separately.

Official documents

• Hikvision DS-6904UDI manufacturer reference

Manufacturer source checked 2026-09-10. The supplied unit and local terms require confirmation.