Product Overview
Built for outdoor dome mounting on building facades, entrance overhangs, and exposed commercial locations, the DS-2CD2186G2-ISU delivers 8MP (4K) resolution with Hikvision’s AcuSense deep learning technology for human and vehicle target classification. Featuring a 2.8mm fixed lens with a 102-degree wide viewing angle, this camera covers broad areas from a single mounting point, making it well suited to entrances, car parks, and outdoor corridors where wide-angle identification is a priority. Equipped with EXIR 2.0 infrared technology, it provides up to 30m of night visibility, while 120dB true wide dynamic range handles scenes with strong backlighting such as glass shopfronts or sun-facing entrances. Built with a vandal-resistant dome housing for durability in exposed locations, the DS-2CD2186G2-ISU also includes a built-in microphone and audio and alarm I/O interface, adding on-site audio capture and external device integration to the feature set. H.265+ compression keeps storage and bandwidth requirements in check across multi-camera deployments.
Key Capabilities
AcuSense Human and Vehicle Classification
Deep learning algorithms separate human and vehicle targets from irrelevant motion such as foliage and lighting changes. This reduces the volume of non-actionable events and keeps alert queues focused on what actually matters at monitored entry points and outdoor areas.
8MP 4K Resolution with 102-Degree Wide Angle
The 2.8mm fixed lens captures a 102-degree field of view at full 8MP resolution, delivering enough detail to identify individuals and vehicles across wide entrance areas or outdoor corridors without requiring multiple cameras to cover the same space.
DarkFighter Low-Light Performance
Powered-by-DarkFighter sensor technology captures usable colour detail in low ambient light conditions before the IR kicks in. This is especially relevant for partially lit outdoor areas such as building entries and covered car parks where lighting is inconsistent.
120dB True WDR for Backlit Scenes
120dB true wide dynamic range prevents overexposed or silhouetted images when the camera faces strong backlighting, such as sun-facing entrances, glass doors, or security gates where direct light often obscures subject detail.
Built-In Microphone and I/O Interface
The built-in microphone captures on-site audio alongside video, useful for outdoor reception areas, gate entry points, and access zones. The audio and alarm I/O interface also allows connection to external sensors or alarm devices for integrated site response.
Best For
- Outdoor Building Entrances: The 102-degree wide-angle 2.8mm lens covers broad entry points in a single frame at 8MP resolution, capturing sufficient detail for identification at doorways, lobbies, and access gates.
- Car Parks and Driveways: AcuSense vehicle classification flags vehicle movement specifically, reducing alerts triggered by environmental motion in open outdoor areas where wind and lighting changes are common.
- Exposed Commercial Facades: The vandal-resistant dome housing withstands interference attempts in publicly accessible outdoor locations, while the IP-rated enclosure handles rain and dust in external mounting positions.
- Multi-Camera NVR Systems: H.265+ compression reduces per-camera bandwidth and storage consumption by up to 80% compared to H.264, making this model practical to deploy across larger channel-count systems without oversizing storage.
Why Choose the DS-2CD2186G2-ISU
The DS-2CD2186G2-ISU separates itself from basic 8MP dome cameras through the combination of AcuSense deep learning classification, DarkFighter low-light imaging, and 120dB true WDR in a vandal-resistant outdoor housing. A standard fixed dome at this resolution captures the image, but without AcuSense the system cannot distinguish a person at the gate from a tree moving in the wind, generating unnecessary alert volume. The built-in microphone and I/O interface add capabilities that simpler fixed domes omit entirely, providing on-site audio capture and the ability to connect alarm inputs without additional hardware. H.265+ compression means 8MP streams are stored efficiently, which matters when scaling across multiple cameras. Available at Security Wholesalers, the DS-2CD2186G2-ISU suits commercial and light industrial sites where smart detection, wide-angle outdoor coverage, and compression efficiency are all required together.
Buyer Decision Tips
Lens and Distance Consideration: The 2.8mm fixed lens provides a 102-degree field of view, which is well suited to wide coverage at moderate distances. If your installation requires identification at distances beyond 10-12 metres or monitoring of a narrow corridor or long driveway, a longer focal length would capture more detail on the target area. The 2.8mm lens is strongest where broad scene coverage at the mounting point is the priority, such as an entrance foyer, building corner, or open car park section.
Key Features & Technical Specifications
| Resolution | 8MP (4K) |
| Lens | 2.8mm fixed |
| Field of View | 102 degrees horizontal |
| IR Range | Up to 30m (EXIR 2.0) |
| Wide Dynamic Range | 120dB True WDR |
| Low-Light Technology | Powered by DarkFighter |
| AI Classification | AcuSense – human and vehicle target classification via deep learning |
| Compression | H.265+ / H.265 / H.264+ / H.264 |
| Bandwidth Saving (vs H.265) | Up to 50% reduction with H.265+ |
| Storage Saving (vs H.264) | Up to 80% reduction with H.265+ |
| Audio | Built-in microphone |
| Interface | Audio and alarm I/O (-SU variant) |
| Housing | Vandal-resistant outdoor dome |
| Image Processor | Ambarella ultra-high-definition chipset |
Ideal Use Cases
Commercial Building Entrances
The 2.8mm wide-angle lens at 8MP resolution captures the full width of a main entry or lobby in a single frame, while AcuSense classification means alerts trigger on people approaching the door, not on reflections or passing vehicle headlights.
Outdoor Car Parks
Vehicle classification through AcuSense separates car movement from environmental triggers in open car park areas. 30m EXIR 2.0 infrared range and DarkFighter imaging maintain scene visibility through the night without relying on external lighting.
Backlit Shopfront Monitoring
120dB true WDR counteracts the contrast issues created when a camera faces a brightly lit shopfront or sun-facing glass entrance, keeping subject detail visible rather than washing out in overexposed conditions.
Access Gate and Security Checkpoints
The built-in microphone captures audio at the point of access, and the alarm I/O interface allows connection to gate sensors or alarm panels. This supports integration into broader access control setups without additional audio hardware at the mounting point.
Multi-Camera NVR Installations
H.265+ reduces per-camera storage consumption by up to 80% compared to H.264, making 8MP streams practical to retain across systems with 8, 16, or more channels without requiring oversized NVR storage configurations.
Choosing the Right Model
- Choose this model if: You need 8MP wide-angle outdoor dome coverage with AcuSense human and vehicle classification, DarkFighter low-light performance, 120dB WDR, and a built-in microphone at a mounting location where the 2.8mm 102-degree field of view suits the scene width.
- Choose a different model if: Your installation requires identification at longer distances where a 2.8mm lens cannot resolve sufficient detail, in which case an 8MP dome with a longer fixed focal length or a motorised varifocal lens would be more appropriate. If active deterrence with a strobe and speaker is required at the mounting point, a model with built-in light and speaker hardware would better suit that application.
FAQs
- What does AcuSense actually do on the DS-2CD2186G2-ISU?
AcuSense uses deep learning to classify detected motion as either a human or a vehicle. Rather than triggering alerts for any pixel change in the frame, such as wind-blown foliage, insects, or light reflection, the camera focuses event notifications specifically on human and vehicle targets. This keeps alert volume relevant and reduces time spent reviewing footage triggered by irrelevant motion. - Is the 2.8mm lens suitable for monitoring a long driveway or narrow access corridor?
The 2.8mm lens provides a 102-degree horizontal field of view, which is optimised for broad scene coverage at close to moderate distances. For narrow corridors or long driveways where you need facial or number plate detail at distances beyond 10-12 metres, a camera with a longer focal length will resolve finer detail on the target. The 2.8mm suits wide entrances, corners, and open outdoor areas rather than long narrow approaches. - Does the DS-2CD2186G2-ISU support two-way audio?
The DS-2CD2186G2-ISU includes a built-in microphone for on-site audio capture, confirmed as part of the -SU variant. However, a built-in speaker is not confirmed in the product data, so this camera cannot be used for two-way voice communication out of the box. Audio capture from the microphone is recorded alongside video and can be monitored through compatible Hikvision NVR or software platforms. - How much storage does an 8MP stream require with H.265+ compression?
H.265+ can reduce storage requirements by up to 80% compared to H.264 and up to 50% compared to standard H.265. In practice this makes 8MP continuous recording far more manageable, though actual storage consumption depends on scene complexity, motion frequency, and recording schedule. For NVR sizing purposes, using H.265+ is strongly recommended over H.264 when deploying multiple 8MP channels. - What does the alarm I/O interface on the -SU variant allow?
The audio and alarm I/O interface allows the camera to connect to external alarm inputs such as door contacts, PIR sensors, or gate triggers, as well as alarm outputs that can activate sirens, lights, or relay-controlled devices. This enables the DS-2CD2186G2-ISU to act as part of a broader site alarm integration rather than functioning as a standalone recording device only. - Where can I find the datasheet and quick start guide for the DS-2CD2186G2-ISU, and is this camera part of the Security Wholesalers range?
The datasheet and quick start guide are linked in the Additional Information section below. The DS-2CD2186G2-ISU is part of the Security Wholesalers range and is supplied with local warranty and support. These documents cover wiring, network configuration, and initial setup steps for the camera.
Product Video Samples
Additional Information
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