DS-2CD23166G3-I2UY(2.8mm) - is a professional 16 MP turret IP camera, with a maximum resolution of 4608 × 3456 and a 2.8 mm fixed lens with a wide 94.5° horizontal viewing angle. Powered by DarkFighter technology guarantees detailed images even in low light conditions, while the 130 dB real WDR improves performance in high-contrast scenes. Thanks to AcuSense with Deep Learning , it recognizes and classifies people and vehicles, supporting perimeter protection, line crossing, intrusion and face acquisition. It integrates IR illumination up to 30 m , integrated dual array microphone , microSD recording up to 512 GB and IEEE 802.3af PoE power supply. The metal structure with IP67 protection and NEMA 4X anti-corrosion treatment makes it suitable for advanced video surveillance systems for indoor and outdoor environments. Hikvision
DS-2CD23166G3-I2UY(2.8mm) – 2.8mm 16MP FIXED LENS TURRET CAMERA - ARTIFICIAL INTELLIGENCE - DEEP LEARNING FUNCTION

The Hikvision DS-2CD23166G3-I2UY is a 16 MP turret IP camera with a resolution of up to 4608 × 3456 and a 2.8 mm fixed lens , ideal for extremely high-detail video surveillance. Powered by DarkFighter technology ensures excellent performance in low-light conditions, while AcuSense with Deep Learning enables intelligent classification of people and vehicles . It integrates real WDR 130 dB , IR up to 30 meters , dual array microphone , microSD support up to 512 GB and PoE power supply. The metal structure with IP67 protection and NEMA 4X anti-corrosion treatment guarantees high reliability even in outdoor environments.
Main features:
- Resolution: 16 MP, 4608 × 3456
- Lens: 2.8 mm, FOV 94.5°
- AI: AcuSense, People and Vehicles
- Night vision: IR up to 30m
- Audio: Built-in dual microphone
- WDR: 130 dB
- Storage: microSD up to 512 GB
- Power: IEEE 802.3af PoE
- Protection: IP67, NEMA 4X
Further details
2.8mm fixed lens with F1.6 aperture , designed to offer a wide 94.5° horizontal , 69.9° vertical and 123.2° diagonal field of view, ideal for effectively monitoring large areas with a single camera.
1/1.8" Progressive Scan CMOS 16 MP sensor with maximum resolution of 4608 × 3456 pixels , capable of acquiring extremely detailed UHD images for professional video surveillance systems.
Hikvision AcuSense technology based on Deep Learning to intelligently distinguish and classify people and vehicles , improving alarm accuracy and security event control.
T Powered by DarkFighter technology designed to ensure high video performance even in low light conditions , with sensitivity up to 0.0008 Lux in color and IR support for vision in low light.
Supports Face Capture and intelligent perimeter protection with line crossing, intrusion, area entry and exit detection, with alarm triggering based on people and vehicle recognition.
It supports IEEE 802.3af, Class 3 PoE power , allowing you to transmit power and data over a single Ethernet cable , with a maximum PoE consumption of 10.5W and simplified installation.
It has 10/100 Mbps Ethernet RJ45 port and supports advanced network protocols, ONVIF Profile S/G/T , HTTPS, IPv4/IPv6, RTSP and numerous other standards, as well as compatibility with Hik-Connect, iVMS-4200 and Hik-Central and up to 6 simultaneous live views .
Technical data sheet
| DS-2CD23166G3-I2UY(2.8mm) | |
| Room | |
| Image Sensor | 1/1.8" Progressive Scan CMOS |
| Max. Resolution | 4608 × 3456 |
| Min. Illumination | Color: 0.0008 Lux @ (F1.6, AGC ON),B/W: 0 Lux with IR |
| Shutter Time | 1/3 s to 1/100,000 s |
| Day & Night | IR cut filter |
| Angle Adjustment | Pan: 0° to 360°,tilt: 0° to 90°,rotate: 0° to 360° |
| Lens | |
| Lens Type | Fixed focal lens, 2.8mm |
| Focal Length & FOV | horizontal FOV 94.5°, vertical FOV 69.9°, diagonal FOV 123.2° |
| Lens Mount | M16 |
| Iris Type | Fixed |
| Openings | F1.0 |
| Depth of Field | 2.9 m to ∞ |
| Illuminator | |
| Supplement Light Type | IR |
| Supplement Light Range | Up to 30 m |
| Smart Supplement Light | Yes |
| IR Wavelength | 850mm |
| Video | |
| Main Stream | 50 Hz: 12.5 fps (4608 × 3456) 20 fps (4608 × 2592) 25 fps (3840 × 2160, 3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) 60 Hz: 15 fps (4608 × 3456) 20 fps (4608 × 2592) 30 fps (3840 × 2160, 3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) |
| Sub-Stream |
50Hz: 25fps (1280×720, 640×480, 640×360) |
| Third Stream |
50Hz: 10fps (1920×1080, 1280×720, 640×480, 640×360) |
| Video Compression |
Main stream: H.265/H.264/H.264+/H.265+, |
| Video Bit Rate |
32 Kbps to 16 Mbps |
| H.264 Type |
Baseline Profile, Main Profile, High Profile |
| H.265 Type |
Main Profile |
| Bit Rate Control |
CBR,VBR |
| Region of Interest (ROI) |
1 fixed region for main stream |
| Scalable Video Coding (SVC) |
H.264 and H.265 encoding |
| Audio | |
| Audio Type | Mono sound |
| Audio Bit Rate | 64 Kbps (G.711ulaw/G.711alaw)/16 Kbps (G.722.1)/16 Kbps (G.726)/16 Kbps to 64 Kbps (AAC-LC)/32 to 192 Kbps (MP2L2)/8 to 320 Kbps (MP3) |
| Audio Compression | G.711/G.722.1/G.726/MP2L2/PCM/MP3/AAC-LC |
| Audio Sampling Rate | 8 kHz/16 kHz/32 kHz/48 kHz |
| Environment Noise Filtering | Yes |
| Network | |
| Protocols | TCP/IP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, DDNS, RTP, RTSP, RTCP, NTP, UPnP, SMTP, IGMP, 802.1X, QoS, IPv4, IPv6, UDP, Bonjour, SSL/TLS, PPPoE, SNMP, WebSocket, WebSockets, SRTP, SFTP |
| Simultaneous Live View |
Up to 6 channels |
| API | ONVIF (Profile S, Profile G, Profile T),ISAPI,SDK,ISUP |
| User/Host |
Up to 32 users. |
| Security |
Password protection, complicated password, HTTPS encryption, 802.1X authentication (EAP-TLS, EAP-LEAP, EAP-MD5), watermark, IP address filter, basic and digest authentication for HTTP/HTTPS, WSSE and digest authentication for Open Network Video Interface, RTP/RTSP over HTTPS, control timeout settings, security audit log, TLS 1.1/1.2/1.3, host authentication (MAC address) |
| Client |
iVMS-4200,Hik-Connect,Hik-Central |
| Network Storage |
NAS (NFS, SMB/CIFS),Auto Network Replenishment (ANR) |
| Web Browser |
Free live view plugin: Chrome 80+, Firefox 80+, Edge 89+ |
| Image | |
| Image Parameters Switch |
Yes |
| Image Settings |
Saturation, brightness, contrast, sharpness, gain, white balance, adjustable by client software or web browser |
| Image Enhancement | BLC,HLC,3D DNR,Distortion Correction,Defog |
| Day/Night Switch |
Day, Night, Auto, Schedule |
| Wide Dynamic Range (WDR) |
130 dB |
| SNR | ≥ 52 dB |
| Privacy Mask |
4 programmable polygon privacy masks |
| Interface | |
| Ethernet Interface | 1 RJ45 10M/100M self-adaptive Ethernet port |
| On-Board Storage | Built-in memory card slot, support microSD/microSDHC/microSDXC card, up to 512GB |
| Audio | Built-in Microphone: Arrayed dual-microphone |
| Reset Key | Yes |
| Event | |
| Basic Event | Motion detection (support alarm triggering by specified target types (human and vehicle)), video tampering alarm, exception |
| Smart Event | Scene change detection |
| Linkage | Upload to FTP/NAS/memory card,notify surveillance center,trigger recording,trigger capture,send email |
| Deep Learning Function | |
| Face Capture | Yes |
| Perimeter Protection | Line crossing, intrusion, region entrance, region exiting Support alarm triggering by specified target types (human and vehicle) |
| General | |
| Power |
12 VDC ± 25%, 0.7 A, max. 8.5 W,Ø5.5 mm coaxial power plug,reverse polarity protection, |
| Material |
Cover: Metal, main body: Metal |
| Dimension |
Ø138.3 mm × 115.4 mm (Ø5.4" × 4.5") |
| Package Dimension |
170 mm × 170 mm × 160 mm (6.7" × 6.7" × 6.3") |
| Weight |
Approx. 750 g (1.7 lb.) |
| With Package Weight |
Approx. 1140 g (2.5 lb.) |
| Storage Conditions |
-30 °C to 60 °C (-22 °F to 140 °F). Humidity 95% or less (non-condensing) |
| Startup and Operating Conditions |
-30 °C to 60 °C (-22 °F to 140 °F). Humidity 95% or less (non-condensing) |
| Language |
33 languages: English, Russian, Estonian, Bulgarian, Hungarian, Greek, German, Italian, Czech, Slovak, French, Polish, Dutch, Portuguese, Spanish, Romanian, Danish, Swedish, Norwegian, Finnish, Croatian, Slovenian, Serbian, Turkish, Korean, Traditional Chinese, Thai, Vietnamese, Japanese, Latvian, Lithuanian, Portuguese (Brazil), Ukrainian |
| General Function |
Heartbeat, mirror, flash log, password reset via email, password protection, anti-banding |
| Approval | |
| EMC | CE-EMC: EN 55032:2015+A1:2020, EN 50130-4:2011+A1:2014, EN IEC 61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A1:2019+A2:2021 |
| Safety | CB: IEC 62368-1: 2014+A11, CE-LVD: EN 62368-1: 2014/A11: 2017 |
| Environment |
CE-RoHS (2011/65/EU) |
| Protection |
IP67: IEC 60529-2013 |
| Anti-Corrosion Protection |
NEMA 4X (NEMA 250-2018) |


