Hikvision DS-2CD2166G2H-ISU 6 MP Acusense DarkFighter Fixed Dome 2.8mm / 4mm Options, IP67/IK10
The Hikvision DS-2CD2166G2H-ISU is a 6 MP AcuSense fixed dome with strong low-light imaging and a built-in microphone. A bright F1.0 lens holds colour as light fades, AcuSense filters alerts to people and vehicles, and an IP67, IK10 vandal-resistant dome suits exposed and public areas.
Key points
- 6 MP (3200 x 1800) on a 1/2.4" sensor with an F1.0 lens
- Powered-by-DarkFighter low-light imaging for colour in dim light
- AcuSense human and vehicle detection on the camera
- Infrared night vision up to 30 m (black and white in full dark)
- Built-in microphone for audio with the video
- IP67 and IK10 vandal-resistant dome; PoE (802.3af) or 12 VDC
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§ 01Overview
What the DS-2CD2166G2H-ISU is
The Hikvision DS-2CD2166G2H-ISU is a 6 MP AcuSense fixed dome built for sites that need detailed images, low-light colour and a tough, tamper-resistant housing.
A 1/2.4" sensor with a bright F1.0 lens captures sharp 6 MP (3200 x 1800) pictures, and 120 dB Wide Dynamic Range balances strong backlight, such as a glass entrance against a shaded foyer.
Its powered-by-DarkFighter imaging is about low light, not zero light: it holds usable colour down to about 0.001 lux as dusk falls and in dimly lit areas.
In full darkness the camera switches to infrared up to 30 m, so the night image is black and white rather than colour.
AcuSense deep learning runs on the camera, classifying people and vehicles and triggering perimeter rules such as line crossing and intrusion only on those targets, which cuts the false alarms that branches, rain and animals cause.
A built-in microphone on this -U model captures sound alongside the video for added context; there is no built-in speaker, so it records audio rather than offering two-way talk.
It is an aluminium dome rated IP67 against dust and water and IK10 against impact, so it stands up to weather and tampering in entrances, car parks and public areas.
Fixed 2.8 mm or 4 mm lens options set the field of view.
A microSD slot takes a card up to 512 GB and H.265+ keeps storage down.
It runs on PoE (802.3af) or 12 VDC.
Record it to a Hikvision AcuSense NVR so the people and vehicle events stay quick to search.
See it in action
What the DS-2CD2166G2H-ISU features actually look like
Representative illustrations of how each key feature performs in a real scene.
6MP Ultra HD
30m IR Night Vision
Full Color Night Vision
False Alarm Reduction
Human/Vehicle Detection
Illustrative — simulated for demonstration
§ 02Engineering
DS-2CD2166G2H-ISU specifications
- Powered-by-DarkFighter imaging holds colour down to about 0.001 lux in dim light
- AcuSense human and vehicle detection with perimeter rules
- Infrared night vision up to 30 m (black and white in full dark)
- Built-in microphone captures audio with the video
- 120 dB WDR for high-contrast entrances and foyers
- IP67 and IK10 vandal-resistant aluminium dome
- microSD up to 512 GB; 2.8 mm or 4 mm lens; PoE (802.3af) or 12 VDC
§ 03Full datasheet
Detailed specifications
Camera & Image
| Feature | Detail |
|---|---|
| Image Sensor | 1/2.4" Progressive Scan CMOS |
| Max. Resolution | 3200 × 1800 |
| Min. Illumination | Color: 0.001 Lux @ (F1.0, 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 355°, tilt: 0° to 75°, rotate: 0° to 355° |
| Image Parameters Switch | Yes |
| Image Settings | Rotate mode, saturation, brightness, contrast, sharpness, gain, white balance, adjustable by client software or web browser |
| Day/Night Switch | Day, Night, Auto, Schedule |
| Image Enhancement | BLC, HLC, 3D DNR |
| SNR | ≥ 52 dB |
| Wide Dynamic Range (WDR) | 120 dB |
| Privacy Mask | 4 programmable polygon privacy masks |
Lens & Distance
| Feature | Detail |
|---|---|
| Lens Type | Fixed focal lens, 2.8 and 4 mm optional |
| Focal Length & FOV | 2.8 mm, horizontal FOV 114.8°, vertical FOV 60°, diagonal FOV 143.5° | 4 mm, horizontal FOV 94°, vertical FOV 50.2°, diagonal FOV 112° |
| Lens Mount | M12 |
| Iris Type | Fixed |
| Aperture | F1.0 |
| Depth of Field | 2.8 mm: 1.7 m to ∞ | 4 mm: 2.2 m to ∞ |
| DORI | 2.8 mm: D: 64 m, O: 25 m, R: 12 m, I: 6 m | 4 mm: D: 77 m, O: 30 m, R: 15 m, I: 7 m |
Night Vision
| Feature | Detail |
|---|---|
| Supplement Light Type | IR |
| Supplement Light Range | Up to 30 m |
| Smart Supplement Light | Yes |
| IR Wavelength | 850 nm |
Video
| Feature | Detail |
|---|---|
| Main Stream | 50 Hz: 25 fps (3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) | 60 Hz: 24 fps (3200 × 1800), 30 fps (2688 × 1520, 1920 × 1080, 1280 × 720) |
| Sub-Stream | 50 Hz: 25 fps (1280 × 720, 640 × 480, 640 × 360) | 60 Hz: 30 fps (1280 × 720, 640 × 480, 640 × 360) |
| Third Stream | 50 Hz: 10 fps (1920 × 1080, 1280 × 720, 640 × 480, 640 × 360) | 60 Hz: 10 fps (1920 × 1080, 1280 × 720, 640 × 480, 640 × 360); *Third stream is supported under certain settings. |
| Video Compression | Main stream: H.265/H.264/H.264+/H.265+; Sub-stream: H.265/H.264/MJPEG; Third stream: H.265/H.264; *Third stream is supported under certain settings. |
| 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 |
| Scalable Video Coding (SVC) | H.264 and H.265 encoding |
| Region of Interest (ROI) | 1 fixed region for main stream and sub-stream |
Audio
| Feature | Detail |
|---|---|
| Audio Type | -U: Mono sound |
| Audio Compression | -U: G.711/G.722.1/G.726/MP2L2/PCM/MP3/AAC-LC |
| Audio Bit Rate | -U: 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 Sampling Rate | -U: 8 kHz/16 kHz/32 kHz/48 kHz |
| Environment Noise Filtering | -U: Yes |
AI & Deep Learning
| Feature | Detail |
|---|---|
| Face Capture | Yes |
| Perimeter Protection | Line crossing, intrusion, region entrance, region exiting; Support alarm triggered by specified target types (human and vehicle) |
Network & Storage
| Feature | Detail |
|---|---|
| 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; 3 user levels: administrator, operator, and user |
| 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) |
| Network Storage | NAS (NFS, SMB/CIFS), Auto Network Replenishment (ANR); Together with high-end Hikvision memory card, memory card encryption and health detection are supported. |
| Client | iVMS-4200, Hik-Connect, Hik-Central |
| Web Browser | Plug-in required live view: IE 10, IE 11; Plug-in free live view: Chrome 57.0+, Firefox 52.0+, Edge 89+; Local service: Chrome 57.0+, Firefox 52.0+, Edge 89+ |
Event & Alarm
| Feature | Detail |
|---|---|
| Basic Event | Motion detection (support alarm triggering by specified target types (human and vehicle)), video tampering alarm, exception |
| Linkage | Upload to FTP/NAS/memory card, notify surveillance center, trigger recording, trigger capture, send email |
| Smart Event | Scene change detection |
Interface
| Feature | Detail |
|---|---|
| Ethernet Interface | 1 RJ45 10 M/100 M self-adaptive Ethernet port |
| On-Board Storage | Built-in memory card slot, support microSD/microSDHC/microSDXC card, up to 512 GB |
| Built-in Microphone | -U: Yes |
| Audio | -S: 1 input (line in), two-core terminal block, max. input amplitude: 3.3 Vpp, input impedance: 4.7 KΩ, interface type: non-equilibrium, 1 output (line out), two-core terminal block, max. output amplitude: 3.3 Vpp, output impedance: 100 Ω, interface type: non-equilibrium |
| Alarm | -S: 1 input, 1 output (max. 12 VDC, 30 mA) |
| Reset Key | Yes |
General & Environment
| Feature | Detail |
|---|---|
| Power | 12 VDC ± 25%, 0.65 A, max. 7.8 W, Ø 5.5 mm coaxial power plug, reverse polarity protection; PoE: IEEE 802.3af, Class 3, max. 9.5 W |
| Material | Base: aluminum alloy, cover: aluminum alloy |
| Dimension | Ø121.5 mm × 97.6 mm (Ø4.78" × 3.84") |
| Package Dimension | 150 mm × 150 mm × 142 mm (9.2" × 4.7" × 4.6") |
| Weight | Approx. 525 g (1.2 lb.) |
| With Package Weight | Approx. 750 g (1.7 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) |
| General Function | Heartbeat, mirror, password reset via email, pixel counter, anti-banding |
| 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 |
| EMC | CE-EMC: EN 55032: 2015, EN 61000-3-2:2019, EN 61000-3-3: 2013+A1:2019, EN 50130-4: 2011 +A1: 2014; IC: ICES-003: Issue 7; KC: KN32: 2015, KN35: 2015; RCM: AS/NZS CISPR 32: 2015 |
| Safety | CB: IEC 62368-1: 2014+A11; CE-LVD: EN 62368-1: 2014/A11: 2017; LOA: IEC/EN 60950-1 |
| Environment | CE-RoHS: 2011/65/EU; WEEE: 2012/19/EU; Reach: Regulation (EC) No 1907/2006 |
| Protection | IP67: IEC 60529-2013, IK10: IEC 62262:2002 |
§ 04Why choose this
Built for the way you actually use the DS-2CD2166G2H-ISU
Tough and tamper-resistant
An IP67, IK10 aluminium dome suits exposed entrances, car parks and public areas.
Fewer false alarms
AcuSense classifies people and vehicles, so alerts come from real targets, not weather and animals.
Flexible mounting and finish
Wall or ceiling mounting with 2.8 mm or 4 mm lenses and a black option for a discreet look.
§ 05Where it fits
Right at home in these scenarios
Shops and entrances
Cover a doorway or counter with sharp 6 MP detail and a discreet dome that resists tampering.
Car parks and ramps
Watch bays and ramps where lighting is poor and a vandal-resistant dome is needed.
Schools and campuses
Monitor walkways and foyers and filter out animals and moving foliage from alerts.
Offices and lobbies
Keep a neat dome over reception areas with audio context and low-light colour.
§ 06Setup
Installation & setup
What's in the box
One DS-2CD2166G2H-ISU dome camera with a mounting template, fixings and a quick guide. The PoE switch or NVR, network cable, microSD card and any wall or pendant bracket are supplied separately.
Installation requirements
Mount it on a ceiling or wall over the area to cover and aim the lens with the three-axis gimbal, then run one network cable back to a PoE (802.3af) switch or NVR, or use 12 VDC. Set the AcuSense rules in the software and record it to a Hikvision AcuSense NVR. Avoid reflective surfaces directly in front of the lens so the infrared does not bounce back at night.
§ 07Questions
Frequently asked about the DS-2CD2166G2H-ISU
Q.01
Does the DS-2CD2166G2H-ISU record in colour at night?
Q.02
Is it vandal resistant?
Q.03
Does it have a microphone or two-way audio?
Q.04
How does AcuSense cut false alarms?
Q.05
What lens options does it have?
Q.06
Can I mount it on a wall or a ceiling?
Q.07
What power and recorder does it need?
Q.08
Is it suitable for outdoors in Australia?
§ 09Bundles
Recommended packages
Record and review it
Feed it to a Hikvision AcuSense recorder such as the 8-channel DS-7608NI-M2/8P, or the 16-channel DS-7616NI-M2/16P for larger sites. Add a surveillance-grade drive like the 8 TB for weeks of continuous footage.
Power it over one cable
Run a single network cable per camera from a PoE source. The HiLook 8-port PoE switch feeds several cameras and the recorder, keeping the cabling tidy on multi-camera sites.
Mount and bring it out
A DS-1272ZJ-120 wall bracket brings the dome out from a soffit or onto a wall, and a DS-1280ZJ-DM46 junction box tidies the cabling on a flat surface for a neat finish.
