Hikvision DS-2CD2186G2-ISU 8MP Acusense Outdoor Dome CCTV Camera, 30m IR, 2.8mm MIC + I/O
The Hikvision DS-2CD2186G2-ISU is an 8MP 4K AcuSense fixed dome with a built-in microphone and audio/alarm interface. Its deep-learning engine classifies people and vehicles to cut false alarms, DarkFighter handles low light and the tough IP67 and IK10 housing suits exposed eaves, ceilings and walls.
Key points
- 8MP 4K (3840 x 2160) resolution for fine identification detail
- AcuSense human and vehicle classification to reduce false alarms
- Built-in microphone plus an audio and alarm input/output interface
- 30m infrared night vision with Smart IR; 120dB true WDR; DarkFighter
- 2.8mm or 4mm fixed lens (chosen at checkout)
- IP67 weatherproof and IK10 vandal-resistant; PoE (802.3af) or 12V DC
inc GST + 3 Year Warranty & Support
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3-Year Warranty
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30-Day Returns
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Fast Delivery
5-10 Day Delivery Australia-wide
§ 01Overview
What the DS-2CD2186G2-ISU is
The Hikvision DS-2CD2186G2-ISU is an 8MP 4K AcuSense fixed dome camera for outdoor and undercover use.
Its 8MP sensor (3840 x 2160) captures identification-grade detail of faces and vehicles within range, and AcuSense gen 2 deep learning classifies people and vehicles, so motion and perimeter events come from real targets rather than animals, shadows or headlights, and recorded footage is quick to search by target type.
DarkFighter low-light processing keeps the picture usable in dim conditions, and 120dB true WDR balances bright and shadowed areas such as a doorway backlit by the sky or a storefront with large windows.
An 850nm infrared illuminator reaches up to 30 metres at night; as an infrared model it records in black and white in full darkness.
The -ISU model adds a built-in microphone and an audio and alarm input/output interface, so you can capture sound and integrate sensors; it has a microphone but no speaker, so it is not a two-way audio camera.
The fixed lens is available in 2.8mm or 4mm.
The metal housing is IP67-rated and IK10 vandal-resistant, and mounts to a wall, soffit or ceiling.
The camera runs over PoE (802.3af) or 12V DC, takes a microSD card up to 256GB for on-board recording, and works with Hikvision AcuSense NVRs and Hik-Connect.
It is normally installed by a security or cabling technician.
See it in action
What the DS-2CD2186G2-ISU features actually look like
Representative illustrations of how each key feature performs in a real scene.
8MP Ultra HD
Even when a person or car is far down the driveway, you can zoom in and still recognise a face or read a number plate — detail that lower-resolution cameras lose.
30m IR Night Vision
Human/Vehicle Detection
IP67 Weatherproof
Illustrative — simulated for demonstration
§ 02Engineering
DS-2CD2186G2-ISU specifications
- AcuSense gen 2 deep-learning detection classifies people and vehicles and filters out animals and shadows.
- Built-in microphone plus an audio and alarm input/output interface for sound capture and sensor integration.
- 30m infrared night vision with Smart IR, DarkFighter low-light and 120dB true WDR.
- 2.8mm or 4mm fixed lens in an IK10 vandal-resistant dome housing.
- IP67 weatherproof, PoE (802.3af) or 12V DC power, and microSD recording up to 256GB.
§ 03Full datasheet
Detailed specifications
Camera & Image
| Feature | Detail |
|---|---|
| Image Sensor | 1/1.8" Progressive Scan CMOS |
| Max. Resolution | 3840 × 2160 |
| Shutter Speed | 1/3 s to 1/100,000 s |
| Min. Illumination | Color: 0.003 Lux @ (F1.6, AGC ON), B/W: 0 Lux with IR |
| Slow Shutter | Yes |
| Wide Dynamic Range | 120 dB |
| Day & Night | IR cut filter |
| Day/Night Switch | Day, Night, Auto, Schedule |
| S/N Ratio | ≥ 52 dB |
| Target Cropping | Yes |
| Image Enhancement | BLC, HLC, 3D DNR |
| Image Parameters Switch | Yes |
| Image Settings | Rotate mode, saturation, brightness, contrast, sharpness, gain, white balance adjustable by client software or web browser |
Lens & Distance
| Feature | Detail |
|---|---|
| Lens Type | Fixed focal lens, 2.8 and 4 mm optional |
| Focal Length | 2.8 mm; 4 mm |
| Field of View | 2.8 mm: horizontal FOV 111°, vertical FOV 59°, diagonal FOV 131° | 4 mm: horizontal FOV 87°, vertical FOV 47°, diagonal FOV 102° |
| Lens Mount | M12 |
| Iris Type | Fixed |
| Aperture | F1.6 |
| Working Distance | 2.8 mm: 2.6 m to ∞ | 4 mm: 3.2 m to ∞ |
| DORI | 2.8 mm: D: 89.2 m, O: 35.4 m, R: 17.8 m, I: 8.9 m | 4 mm: D: 99.4 m, O: 39.4 m, R: 19.9 m, I: 9.9 m |
| Pan Range | 0° to 355° |
| Tilt Range | 0° to 75° |
| Rotation Range | 0° to 355° |
Night Vision
| Feature | Detail |
|---|---|
| Supplement Light Type | IR |
| Smart Supplement Light | Yes |
| IR Wavelength | 850 nm |
| IR Range | Up to 30 m |
Video
| Feature | Detail |
|---|---|
| Main Stream | 50 Hz: 25 fps (3840 × 2160, 3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) | 60 Hz: 24 fps (3840 × 2160), 30 fps (3200 × 1800, 2688 × 1520, 1920 × 1080, 1280 × 720) |
| Sub-Stream | 50 Hz: 25 fps (640 × 480, 640 × 360) | 60 Hz: 30 fps (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 |
| H.264+ | Main stream supports |
| H.265+ | Main stream supports |
| 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 | Mono sound |
| Environment Noise Filtering | Yes |
| Audio Sampling Rate | 8 kHz/16 kHz/32 kHz/44.1 kHz/48 kHz |
| Audio Compression | G.711ulaw/G.711alaw/G.722.1/G.726/MP2L2/PCM/MP3/AAC |
| Audio Bit Rate | 64 Kbps (G.711ulaw/G.711alaw)/16 Kbps (G.722.1)/16 Kbps (G.726)/32 to 192 Kbps (MP2L2)/8 to 320 Kbps (MP3)/16 to 64 Kbps (AAC) |
AI & Deep Learning
| Feature | Detail |
|---|---|
| Face Capture | Yes |
| Perimeter Protection | Line crossing detection, intrusion detection, region entrance detection, region exiting detection. Supports human and vehicle targets classification |
Network & Storage
| Feature | Detail |
|---|---|
| Simultaneous Live View | Up to 6 channels |
| API | Open Network Video Interface (PROFILE S, PROFILE G, PROFILE T), ISAPI, SDK |
| Protocols | TCP/IP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, DDNS, RTP, RTSP, NTP, UPnP, SMTP, IGMP, 802.1X, QoS, IPv4, IPv6, UDP, Bonjour, SSL/TLS, PPPoE, SNMP, ARP |
| User/Host | Up to 32 users. 3 user levels: administrator, operator and user |
| Security | Password protection, complicated password, HTTPS encryption, IP address filter, Security Audit Log, basic and digest authentication for HTTP/HTTPS, TLS 1.1/1.2, WSSE and digest authentication for Open Network Video Interface |
| Network Storage | MicroSD/SDHC/SDXC card (256 GB) local storage, and 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+ | Plug-in free live view: Chrome 57.0+, Firefox 52.0+ | Local service: Chrome 57.0+, Firefox 52.0+ |
Event & Alarm
| Feature | Detail |
|---|---|
| Basic Event | Motion detection (human and vehicle targets classification), video tampering alarm, exception; alarm input and output |
| Smart Event | Scene change detection |
| Linkage Method | Upload to FTP/memory card/NAS, notify surveillance center, send email, trigger recording, trigger capture; trigger alarm output, audible warning |
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/SDHC/SDXC card, up to 256 GB |
| Built-in Microphone | Yes |
| Audio Input | 1 input (line in), max. input amplitude: 3.3 vpp, input impedance: 4.7 KΩ, interface type: non-equilibrium |
| Audio Output | 1 output (line out), max. output amplitude: 3.3 vpp, output impedance: 100 Ω, interface type: non-equilibrium, mono sound |
| Alarm Input | 1 input (TTL: max. 12 VDC, 30 mA) |
| Alarm Output | 1 output (TTL: max. 12 VDC, 30 mA) |
| Reset Key | Yes |
General & Environment
| Feature | Detail |
|---|---|
| Material | Metal |
| Screw Material | SUS304 |
| Dimension | Ø121.4 mm × 92.2 mm (Ø4.8" × 3.6") |
| Package Dimension | 150 mm × 150 mm × 141 mm (5.9" × 5.9" ×5.6") |
| Weight | Approx. 590 g (1.3 lb.) |
| With Package Weight | Approx. 850 g (1.9 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) |
| Firmware Version | V5.5.112 |
| Power Consumption and Current | 12 VDC, 0.5 A, max. 6 W | PoE (802.3af, 36 V to 57 V), 0.25 A to 0.15 A, max. 7.5 W |
| Power Supply | 12 VDC ± 25% | PoE: 802.3af, Class 3 |
| Power Interface | Ø 5.5 mm coaxial power plug |
| 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 | Anti-flicker, heartbeat, mirror, privacy mask, flash log, password reset via email, pixel counter |
| Software Reset | Yes |
| EMC | FCC (47 CFR Part 15, Subpart B); CE-EMC (EN 55032: 2015, EN 61000-3-2: 2014, EN 61000-3-3: 2013, EN 50130-4: 2011 +A1: 2014); RCM (AS/NZS CISPR 32: 2015); KC (KN 32: 2015, KN 35: 2015) |
| Safety | UL (UL 60950-1); CB (IEC 60950-1:2005 + Am 1:2009 + Am 2:2013, IEC 62368-1:2014); CE-LVD (EN 60950-1:2005 + Am 1:2009 + Am 2:2013, IEC 62368-1:2014) |
| 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-2CD2186G2-ISU
Detail in hard light
An 8MP 1/1.8" sensor with DarkFighter and 120dB WDR holds faces and plates in backlit doorways and storefront glare that lower-resolution domes lose.
Tough where it is reachable
An IP67 and IK10 dome suits exposed eaves, ceilings and walls, and the built-in microphone adds audio context where local rules allow.
Backed locally
Supplied by an authorised dealer with a 3-year warranty and Australia-wide support.
§ 05Where it fits
Right at home in these scenarios
Home entries and eaves
Mount under the eaves over a front door or garage to capture face-level 4K detail of visitors and deliveries.
Shops and receptions
Cover a counter, doorway or reception in a low-profile dome with audio context and IK10 toughness against tampering.
Building walls and ceilings
Fit to a wall or ceiling at a covered entry, car park or walkway where a vandal-resistant dome suits a public area.
Small business perimeters
Watch a yard boundary or side access in 8MP with AI alerts that ignore animals and moving foliage.
§ 06Setup
Installation & setup
What it is
An 8MP 4K AcuSense outdoor dome with a 2.8mm or 4mm fixed lens; choose the lens in your order comments. Built-in microphone, no speaker.
Power and cabling
Run one Cat5e/6 cable and power it over PoE (802.3af) from a PoE switch or NVR, or use 12V DC where PoE is not available.
Mounting
Fix to a wall, soffit or ceiling at about 2.5-3 m; the three-axis gimbal lets you aim the lens after mounting, and under-eave positions limit UV exposure.
Setup
In Australia a network camera is usually fitted by a licensed security installer or a competent IT/cabling technician, who runs the Cat5e/6 cable, terminates the RJ45, mounts the camera and adds it to the NVR or app. Add it in Hik-Connect or your NVR, set human and vehicle detection zones, and check your state's audio recording rules before enabling the microphone.
§ 07Questions
Frequently asked about the DS-2CD2186G2-ISU
Q.01
What is the difference between the -I and the -ISU model?
Q.02
Which lens should I choose, 2.8mm or 4mm?
Q.03
Does it record in colour at night?
Q.04
Does it support PoE or do I need a power supply?
Q.05
Is it vandal-resistant?
Q.06
Will it work with my existing Hikvision NVR?
Q.07
Can it record without an NVR?
Q.08
Is audio recording legal in Australia?
§ 09Bundles
Recommended packages
Record it on an NVR
Pair it with a Hikvision PoE NVR such as the DS-7604NI-M1/4P, DS-7608NI-M2/8P or DS-7616NI-M2/16P for one-cable power and recording.
Add storage for 4K
Fit a surveillance drive such as the 6TB or 8TB in the NVR; 8MP streams suit a larger drive.
Mount and protect cabling
Add the DS-1280ZJ-DM46 junction box for tidy, weather-protected terminations behind the dome.
Compare the range
Want a mini dome or a varifocal dome instead? See the DS-2CD2566G2-IS mini dome or the DS-2CD2766G2T-IZS motorised dome.
