Hikvision DS-2CD2346G2H-IU 4mm Product Overview
The Hikvision DS-2CD2346G2H-IU(4mm)(eF) is a 4MP AcuSense Powered-by-DarkFighter fixed turret network camera with a built-in microphone and a narrower 4mm lens. Its 1/3-inch progressive-scan CMOS sensor records at up to 2688 × 1520, while the fixed F1.0 lens provides an 81.1° horizontal field of view.
The camera combines a manufacturer-rated minimum colour illumination of 0.001 lux, infrared illumination up to 30 metres and 120dB WDR. Deep-learning analytics support human and vehicle classification for compatible events. It also provides face capture, scene-change detection and memory-card support up to 512GB. Hikvision does not state a built-in speaker, external audio input/output or alarm input/output for this exact IU model.
Key Benefits
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Detailed 4MP video: records at up to 2688 × 1520 at 25fps in 50Hz mode or 30fps in 60Hz mode.
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Tighter 4mm view: the 81.1° horizontal field of view provides a narrower scene than the 2.8mm version.
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DarkFighter low-light imaging: the F1.0 aperture supports useful colour detail in very low illumination.
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Infrared night monitoring: built-in IR has a manufacturer-rated range of up to 30 metres.
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AcuSense classification: supported events can distinguish human and vehicle targets.
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Backlight handling: 120dB WDR helps retain detail in high-contrast scenes.
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Built-in audio capture: the integrated microphone records sound without implying speaker playback.
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Protected metal housing: the enclosure is rated IP67.
Key Features
- 4MP maximum resolution of 2688 × 1520
- 1/3-inch progressive-scan CMOS sensor
- 4mm fixed focal lens with F1.0 aperture
- 81.1° horizontal, 44.7° vertical and 94.6° diagonal field of view
- Minimum colour illumination of 0.001 lux at F1.0 with AGC enabled
- Infrared illumination up to 30 metres
- 120dB true wide dynamic range
- H.265+, H.265, H.264+ and H.264 compression
- Human and vehicle classification for supported events
- Face capture and scene-change detection
- Built-in microphone with environmental-noise filtering
- Memory-card support up to 512GB
- 12V DC or IEEE 802.3af PoE power
- IP67 weather resistance
Technical Specifications
| Model |
DS-2CD2346G2H-IU(4mm)(eF) |
| Camera type |
Fixed turret network camera |
| Image sensor |
1/3-inch progressive-scan CMOS |
| Maximum resolution |
2688 × 1520 |
| Maximum frame rate |
25fps at maximum resolution in 50Hz mode; 30fps in 60Hz mode |
| Minimum illumination |
Colour: 0.001 lux at F1.0 with AGC on; black and white: 0 lux with infrared |
| Lens |
4mm fixed focal lens, F1.0 |
| Field of view |
Horizontal 81.1°; vertical 44.7°; diagonal 94.6° |
| Depth of field |
Approximately 2.5m to infinity |
| Physical adjustment |
Pan 0° to 360°, tilt 0° to 75° and rotation 0° to 360° during installation |
| Infrared range |
Up to 30m, 850nm |
| Wide dynamic range |
120dB |
| Video compression |
H.265+, H.265, H.264+ and H.264; MJPEG on the sub-stream |
| Analytics |
Human and vehicle classification for supported events; face capture and scene-change detection |
| Built-in audio |
Built-in microphone; no built-in speaker stated |
| External interfaces |
No external audio input/output or alarm input/output stated |
| Local storage |
Compatible microSD-family cards up to 512GB |
| Network and API |
RJ45 10/100Mbps; ONVIF Profiles S, G and T; ISAPI and SDK |
| Power |
12V DC ±25%, maximum 7.2W; IEEE 802.3af PoE Class 3, maximum 9W |
| Operating conditions |
-30°C to 60°C; relative humidity 95% or less, non-condensing |
| Housing |
Metal, white finish |
| Protection |
IP67; no IK impact rating stated |
| Dimensions |
Ø138.3 × 115.4mm |
| Weight |
Approximately 550g |
Choosing the 4mm Lens
The 4mm lens provides a narrower view than the 2.8mm option, so subjects appear larger at the same distance. It can be better suited to a defined entrance, path or target area, but it covers less width. Confirm the required field of view before ordering because the lens is fixed and cannot zoom.
Detection, Audio and Compatibility
AcuSense can classify human and vehicle targets for supported events. The built-in microphone records audio, but no speaker or audio output is stated, so this listing does not claim two-way audio.
Confirm NVR 4MP decoding, AcuSense and audio-recording support, PoE capacity, storage-card compatibility and mounting accessories before ordering.
Frequently Asked Questions
What is the maximum resolution?
2688 × 1520, commonly described as 4MP.
What lens is fitted?
A fixed 4mm F1.0 lens.
What is the field of view?
81.1° horizontal, 44.7° vertical and 94.6° diagonal.
How does 4mm differ from 2.8mm?
The 4mm lens provides a narrower view and makes subjects appear larger at the same distance.
Can the lens zoom?
No. It is a fixed focal lens.
What is the IR range?
Up to 30 metres under manufacturer test conditions.
Does it classify people and vehicles?
Yes, for supported event types.
Does it have a built-in microphone?
Yes.
Does it support two-way audio?
No built-in speaker or audio output is stated.
What storage and protection are supported?
Compatible memory cards up to 512GB are supported, and the housing is rated IP67.
