Product Overview
For installations where ceiling-mounted coverage needs to combine discretion with serious imaging performance, the DS-2CD2186G2H-ISU delivers 8MP (3840×2160) 4K resolution in a compact dome housing rated IP67 and IK10 for both outdoor exposure and tamper resistance. Featuring Hikvision’s DarkFighter technology, this camera maintains colour imaging down to 0.0008 Lux at F1.0, keeping footage usable through dusk, dawn, and low-light lobbies without relying immediately on the 30m Smart IR illuminator. AcuSense deep-learning analytics classify motion events as human or vehicle targets, reducing the volume of irrelevant alerts on busy sites. The “-ISU” variant adds a built-in microphone and alarm I/O support, extending its usefulness for sites that require on-camera audio capture alongside video. Available in a 2.8mm fixed lens offering a 105.1-degree horizontal field of view, it suits building entries, covered walkways, retail ceilings, and protected outdoor positions where a tidy dome profile is preferred.
Key Capabilities
8MP 4K Resolution on a 1/1.8″ Sensor
The large 1/1.8-inch progressive-scan CMOS sensor captures 3840×2160 footage with enough pixel density to zoom into stills for subject identification, read signage, or review entranceway detail without a second camera position.
DarkFighter Low-Light Colour Imaging
Colour performance down to 0.0008 Lux at F1.0 means the camera continues to deliver usable colour footage through dim corridors, poorly lit car park entries, and transitional lighting conditions where competing sensors switch to monochrome.
AcuSense Human and Vehicle Classification
Deep-learning analytics built into the camera distinguish humans and vehicles from other motion sources. This keeps alarm queues focused on actionable events at sites where camera coverage also captures foliage, passing traffic, or wildlife at the frame edge.
IP67 and IK10 Dome Housing
Full dust and water ingress protection combined with IK10 impact resistance allows this dome to be mounted in semi-exposed outdoor positions, covered walkways, and public-access areas where physical interference is a genuine risk.
Built-in Microphone and Alarm I/O
The integrated microphone records on-camera audio alongside video for sites where incident audio is useful for review or evidence. Alarm I/O support allows connection to external sensors or outputs, extending the camera into basic alarm integration scenarios.
Best For
- Building Entries and Lobbies: The 2.8mm fixed lens covers a 105.1-degree horizontal field of view, capturing the full width of a standard entry point while 4K resolution retains enough detail for face-level identification at the door threshold.
- Covered Outdoor Walkways and Overhangs: IP67 and IK10 ratings support installation in partially exposed positions such as undercover car parks, loading bay ceilings, and building eave soffits where weather and occasional impact are concerns.
- Retail Ceiling Monitoring: The compact dome profile mounts flush to ceiling surfaces in retail and commercial interiors without drawing customer attention, while DarkFighter maintains colour accuracy under mixed artificial lighting conditions.
- Sites Requiring On-Camera Audio: The built-in microphone captures ambient audio directly at the camera head, removing the need for a separate audio device at locations such as reception counters, kiosk areas, or access control points.
Why Choose the DS-2CD2186G2H-ISU
The DS-2CD2186G2H-ISU occupies a specific tier above standard 4K fixed domes by combining DarkFighter low-light imaging, AcuSense classification, and an integrated microphone in a single IK10-rated housing. A basic 8MP dome at this price point will typically provide resolution alone; this model adds the ability to sustain colour footage at 0.0008 Lux, filter human and vehicle events through on-board deep learning, and record alarm-triggered audio without additional hardware. The 130dB wide dynamic range handles backlit entrances and mixed indoor-outdoor scenes that defeat cameras with standard WDR. PoE 802.3af support keeps installation straightforward with a single Cat5e or Cat6 cable to the dome head. The onboard microSD slot accepts cards up to 512GB for edge storage, useful as a backup to NVR-based recording. Available through Security Wholesalers, this camera suits commercial, industrial, and institutional installations where a single-ceiling-mount position needs to do more work than a basic fixed dome can provide.
Buyer Decision Tips
Lens Selection Before Purchase: This camera is available in a 2.8mm variant (105.1-degree horizontal FOV) and a 4mm variant (90-degree horizontal FOV). The 2.8mm suits wider ceiling coverage of open areas, reception counters, and short corridors. The 4mm narrows the view but improves subject scale at longer distances from the mount point, making it the better choice for hallways, gate entries, and positions where the camera is mounted more than 5-6 metres from the primary area of interest. Confirm the mounting height and target zone width before ordering, as the fixed lens cannot be adjusted after installation.
Microphone Capture vs. Two-Way Audio: The DS-2CD2186G2H-ISU includes a built-in microphone for one-directional audio recording. This records sound at the camera location alongside the video stream. It is not a two-way audio device, as there is no built-in speaker in this model. If the installation requires the ability to speak through the camera to people in the scene, a separate intercom or speaker solution will be needed alongside this camera.
Key Features & Technical Specifications
| Image Sensor |
1/1.8″ Progressive Scan CMOS |
| Maximum Resolution |
3840 x 2160 (8MP) |
| Minimum Illumination (Colour) |
0.0008 Lux @ F1.0 (AGC ON) |
| Minimum Illumination (B/W) |
0 Lux with IR |
| Lens (2.8mm) |
Fixed 2.8mm, 105.1-degree horizontal FOV |
| Lens (4mm) |
Fixed 4mm, 90.0-degree horizontal FOV |
| IR Illuminator |
Smart IR, up to 30m range, 850nm |
| Wide Dynamic Range |
130dB True WDR |
| Video Compression |
H.265+ / H.265 / H.264+ / H.264 |
| Analytics |
AcuSense deep-learning human and vehicle classification |
| Audio |
Built-in microphone |
| Alarm I/O |
Supported |
| Local Storage |
MicroSD / MicroSDHC / MicroSDXC up to 512GB |
| Protection Rating |
IP67 / IK10 |
| Power |
PoE (IEEE 802.3af) |
| Operating Temperature |
-30°C to +60°C |
| DORI (2.8mm) |
Detect: 89m / Observe: 35m / Recognise: 17m / Identify: 8m |
| DORI (4mm) |
Detect: 109m / Observe: 43m / Recognise: 21m / Identify: 10m |
Ideal Use Cases
Reception and Lobby Areas
The dome housing mounts to ceilings without projecting hardware that draws attention, while 4K resolution and 130dB WDR handle the backlit glare common at glass-fronted reception desks and lobby entrances where ambient and artificial light conflict.
Covered Car Park Columns and Ceilings
IK10 impact resistance and IP67 weatherproofing allow column or ceiling mounting in undercover car parks where moisture ingress, exhaust exposure, and accidental contact from vehicles or people are ongoing concerns.
Retail and Supermarket Ceilings
DarkFighter colour performance under variable fluorescent and LED store lighting, combined with AcuSense human classification, makes this dome effective for retail ceiling positions where staff footfall and customer behaviour need to be reviewed without high false-alert rates.
School and Campus Building Entries
The built-in microphone captures audio at gate and building entry points, while AcuSense classification logs human activity independently of background movement. The IK10 rating provides additional protection at youth-facing sites where camera housings are vulnerable to impact.
Industrial Facility Access Points
The -30°C to +60°C operating range and IP67 ingress protection support installation at factory entries, workshop doorways, and external stairwells where temperature extremes and dust exposure would degrade a camera with a standard-rated housing.
Choosing the Right Model
- Choose this model if: You need 4K resolution from a ceiling-mounted dome with AcuSense analytics, DarkFighter low-light colour performance, a built-in microphone for on-camera audio, and an IK10-rated housing for outdoor or tamper-exposed positions.
- Choose a different model if: The mounting position requires adjustable zoom coverage across a wide variable distance, such as a long driveway or large open yard. A fixed 2.8mm or 4mm dome cannot be reframed after installation, and a motorised varifocal bullet or dome would give the installer more flexibility to frame the scene precisely on-site.
- Choose a different model if: Full-colour night vision without IR is the primary requirement. This model uses Smart IR for zero-light operation rather than a white-light or full-colour illumination system, so night footage in complete darkness will be monochrome IR rather than colour.
FAQs
- What does the built-in microphone on the DS-2CD2186G2H-ISU actually record?
The microphone captures ambient audio at the camera location and records it alongside the video stream to an NVR or edge storage device. This is one-directional audio capture only. The DS-2CD2186G2H-ISU does not include a built-in speaker, so it cannot be used for two-way voice communication without additional hardware.
- How does AcuSense classification work on this camera?
AcuSense uses a deep-learning algorithm processed on the camera itself to evaluate detected motion and determine whether the moving object is a human, a vehicle, or something else. Events classified as human or vehicle can trigger separate alarm rules or recording schedules on a compatible NVR, allowing the system to treat a person walking through a gate differently from a branch moving in wind.
- Does the DS-2CD2186G2H-ISU support edge storage if the NVR goes offline?
Yes. The camera includes a MicroSD/MicroSDHC/MicroSDXC card slot that accepts cards up to 512GB. When configured with edge recording, footage will continue to be written to the local card during a network or NVR outage, reducing the risk of a recording gap at the site.
- Is the IK10 rating sufficient for a public-facing outdoor dome mount?
IK10 is the highest standardised impact protection rating for camera enclosures, corresponding to resistance against 20 joule impacts. Combined with IP67 dust and water ingress protection, the housing is appropriate for covered outdoor positions, public access corridors, and semi-industrial environments. It is not a replacement for a purpose-built cage or recess mount in extreme vandalism scenarios, but it performs well in the large majority of commercial and institutional outdoor applications. The DS-2CD2186G2H-ISU is part of the Security Wholesalers range and is rated for Australian outdoor conditions with an operating temperature of -30°C to +60°C.
- What is the difference between the 2.8mm and 4mm lens variants?
The 2.8mm lens provides a 105.1-degree horizontal field of view, covering wider areas such as open ceiling positions, retail aisles, and reception areas. The 4mm lens narrows to 90 degrees horizontal, which gives a larger subject size at longer distances and is more appropriate for corridor ends, gate entries, and positions where the camera is further from the primary subject zone. Both are fixed-focal lenses and cannot be adjusted after installation.
- What PoE standard does the DS-2CD2186G2H-ISU require?
The camera operates on IEEE 802.3af PoE, which is the standard lower-power PoE type provided by most NVRs with built-in PoE ports and standard PoE network switches. No higher-power 802.3at (PoE+) supply is required. A single Cat5e or Cat6 cable carries both power and data to the camera head, keeping ceiling installation clean and straightforward.
Additional Information
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