DS-2CD2121G0-LIU 2.8MM

The Hikvision DS-2CD2121G0-LIU 2.8mm is the 2MP IP dome with built-in audio. Standard 2-series build quality, audio capture, and the dome form factor at a price point that suits supplementary positions and budget-conscious installs without compromising on the audio context that matters in commercial settings.

SKU: DS-2CD2121G0-LIU 2.8MM Category: Hikvision IP Dome Cameras Tags: 2mp, cctv, h.265+, hikvision, hikvision cctv, ip bullet, ip camera, ip67, poe Brand: HIKVISION

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The 2MP dome with audio for budget commercial installs

The Hikvision DS-2CD2121G0-LIU 2.8mm is the 2MP IP dome with built-in microphone for audio capture. The U in the model designation indicates the audio capability. This is the standard 2-series dome with audio, sitting between the entry-level 1-series and the AcuSense G2H/G3 generations on price and capability.

For multi-camera commercial installations where audio context matters but 4MP detail is more than the supplementary positions need, this is the pragmatic choice. We install it in retail back rooms, restaurant kitchens, office hallways, and other positions where audio plus standard surveillance is the right specification at controlled cost.

What this camera is actually good at

2MP resolution. Sharp enough for general surveillance and basic identification at close range.
Built-in microphone. Audio captured alongside video.
Wide 2.8mm lens. 102° horizontal view.
Standard motion detection. Without AcuSense classification.
IR illumination up to 30 metres.
IP67 weather-sealed.
Compact dome form factor.
H.265+ compression.

Where this camera belongs

Retail back rooms and stockrooms with audio context for stock-handling oversight
Restaurant kitchens capturing staff communication and equipment use
Office hallways and corridors covering general traffic with audio
Small business reception areas as supplementary cameras to a main system
Body corporate communal areas where audio of activity matters
Multi-camera packages where the budget needs to stretch across many positions with audio at each

If you want AcuSense or higher resolution

The DS-2CD2146G2H-ISU 2.8mm is the 4MP AcuSense step up with audio. The right call when AI classification matters at the position.
The DS-2CD2147G3-LIS2UY 2.8mm adds active strobe and ColorVu in the latest generation.

If you want simpler features at lower cost

The DS-2CD1123G0E-I 2.8mm is the entry-level 1-series dome without audio.

Pairs cleanly with the DS-7616NXI-K2 16-channel NVR. Our installation guide covers system design.

Audio with appropriate signage

Audio recording in commercial settings requires reasonable proportionality and (in most cases) appropriate notification signage. We talk this through and recommend signage on every audio-camera install across Pretoria East, Centurion, Midrand, and Johannesburg.

Full 3-year Hikvision South Africa warranty through authorised distribution.

Browse the full Hikvision IP camera range or read more about Hikvision CCTV systems. Current installation specials available. Common questions answered on the CCTV FAQ page.