Hikvision DS-2CD1121G0-I(2.8MM) – 2 MP Fixed Dome Network Camera
The Hikvision DS-2CD1121G0-I(2.8MM) is a 2 MP fixed dome network camera designed for straightforward indoor surveillance. Specifically, it uses a 1/2.9″ progressive scan CMOS sensor paired with a fixed 2.8 mm lens, giving a 101° horizontal field of view and a detection range up to 44 m. As a result, it suits ceiling-mounted coverage of offices, corridors, and retail interiors.
Illumination and Image Quality
Furthermore, the camera includes a standard IR illuminator with a supplementary lighting range of up to 20 m, so it captures usable black-and-white footage in dark rooms or after hours. Meanwhile, Digital WDR helps the camera hold detail against strong backlight, which in turn keeps footage clear near bright windows or doorways. Note that this model does not include white-light illumination, human/vehicle detection, or built-in audio — this is a simple, budget-tier design.
Build, Power, and Storage Note
Importantly, this camera is rated for indoor use only, with a plastic housing and an operating range of -10°C to 40°C — it carries no IP-rated weatherproofing and should not be installed outdoors. Either 12 VDC or PoE (IEEE 802.3af) can power it, making installation straightforward over a single cable. Note also that this model has no on-board microSD slot, so it depends entirely on an NVR or VMS for recording.
Technical Specifications
Camera, Lens, and Illumination
| Specification | Details |
|---|---|
| Model | DS-2CD1121G0-I(2.8MM) |
| Camera Type | 2 MP Fixed Dome Network Camera |
| Image Sensor | 1/2.9″ Progressive Scan CMOS |
| Max Resolution | 1920 × 1080 (2 MP) |
| Lens | Fixed focal, 2.8 mm, F2.2, M12 mount |
| Field of View | 101° (horizontal), 56° (vertical), 118° (diagonal) |
| Detection / Observation Range (DORI) | Detect 44 m / Observe 17 m / Recognize 8 m / Identify 4 m |
| Minimum Illumination | Colour: 0.01 Lux @ (F2.2, AGC ON); B/W: 0 Lux with IR |
| Shutter Speed | 1/3 s to 1/100,000 s |
| Day/Night | IR cut filter with auto switch |
| Angle Adjustment | Pan: 0° to 355°, tilt: 0° to 75° |
| Wide Dynamic Range | Digital WDR |
| Signal-to-Noise Ratio | ≥ 52 dB |
| Smart Features | Motion detection, exception alarm (no human/vehicle classification) |
| Illumination Type | IR only (850 nm) |
| Supplement Light Range | Up to 20 m |
| Image Enhancement | BLC, HLC, 3D DNR |
Video, Network, Power, and Build
| Specification | Details |
|---|---|
| Video Compression | Main stream: H.265+/H.265/H.264+/H.264; Sub-stream: H.265/H.264 |
| Bit Rate | 32 Kbps to 8 Mbps |
| Frame Rate | 25 fps @ 1920 × 1080 (50 Hz); 30 fps (60 Hz) |
| Audio | Not supported |
| Network Storage | None on-board (NVR/VMS recording only) |
| Simultaneous Live View | Up to 6 channels; up to 32 users |
| Network Protocols | TCP/IP, ICMP, DHCP, DNS, HTTP, RTP, RTSP, NTP, IGMP, UDP, QoS |
| Security | Password protection, complicated password, watermark, basic and digest authentication, security audit log |
| Software Clients | iVMS-4200 |
| Power Supply | 12 VDC ± 25%, 0.4 A, max. 4.8 W; or PoE (IEEE 802.3af, Class 3, max. 6.5 W) |
| Ingress Protection | None (indoor use only) |
| Operating Conditions | -10°C to 40°C (14°F to 104°F); humidity 95% or less |
| Material | Plastic |
| Dimensions | Ø 110.8 mm × 85.2 mm |
| Weight | Approx. 240 g (0.5 lb.) |
Who This Camera Suits Best
- Offices and retail interiors – the 101° field of view covers wide indoor spaces from a single ceiling-mounted dome.
- Budget-conscious NVR installations – its low cost and NVR-dependent recording suit buyers who already have centralised storage and don’t need smart detection.
- Indoor corridors and reception areas – dependable daily coverage for spaces that don’t need weatherproofing or advanced smart features.
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