Hikvision DS-2CD2186G2-ISU 8MP AcuSense DarkFighter Dome Camera 4mm

Introduction: Meet the Hikvision DS-2CD2186G2-ISU (4 mm)

The Hikvision DS-2CD2186G2-ISU is an 8MP (4K) fixed-dome IP camera that combines DarkFighter low-light imaging with Hikvision's AcuSense deep-learning analytics. Housed in a rugged IP67/IK10 dome, this camera targets installers and end users who need high-resolution imagery, reliable human/vehicle classification to cut false alarms, and dependable performance in semi-exposed or vandal-prone environments. With a suggested retail price of 179.00 (check local vendors for currency and tax), it represents a strong balance of features and value for many commercial and professional CCTV applications.

Key features at a glance

• Resolution:8 MP (3840 × 2160) 4K image quality for detailed coverage.
• Low-light technology:DarkFighter for accurate colour imaging at very low lux levels; B/W with IR to 0 lux when needed.
• Intelligent analytics:AcuSense human and vehicle classification to reduce false alarms from non-relevant motion.
• Rugged protection:IP67 ingress protection and IK10 impact resistance for semi-exposed or tamper-prone sites.
• Efficient encoding:H.265+/H.265/H.264 support to save bandwidth and storage.
• Installation flexibility:PoE (802.3af) or 12 V DC power options; ONVIF/network compatibility (firmware-dependent).

Detailed specifications and benefits

The camera uses a 1/1.8" progressive-scan CMOS sensor capable of 3840 × 2160 (8 MP) output, paired with a fixed 4 mm F1.6 lens (M12 mount). The wide horizontal field of view (approximately 87°) is suitable for general-purpose surveillance where broad coverage and high detail are both required—shop floors, reception areas, parking aisles and more.

DarkFighter technology is designed for colour imaging in very low light. The DS-2CD2186G2-ISU lists a minimum illumination of 0.003 lux (colour, AGC ON) and can switch to B/W with IR down to 0 lux, supported by IR illumination up to 30 m. Practically, that means improved facial and object recognition under challenging lighting compared with many standard cameras, and clearer evidence-grade footage at night without relying solely on motion-triggered white light.

True WDR (120 dB) helps the camera handle scenes with strong backlight or high contrast—entrances, windows and any place with mixed bright and dark areas. Combined with modern noise reduction and exposure control, the result is a cleaner image with less overexposure or silhouette effects.

Where many cameras trigger on any motion, AcuSense uses deep-learning models to distinguish humans and vehicles from other objects (animals, foliage, shadows). This dramatically lowers nuisance alarms and makes automated perimeter protection or event-based recording more efficient. Perimeter protection rules can then be used to prioritise true security events for fast response.

Support for H.265+ and H.265 reduces bandwidth and storage compared with legacy codecs. The camera supports multiple streams (main / sub / third stream where configured) to allow simultaneous high-resolution recording and low-bitrate remote viewing. A single 10/100 Mbps RJ45 interface is provided; PoE (802.3af) simplifies installation by combining power and data on one cable.

Built for semi-exposed use, the dome meets IP67 for dust and water ingress and IK10 for impact resistance. Operating temperature ranges from −30 °C to 60 °C and humidity tolerance up to 95% non-condensing make it suitable for many indoor and sheltered outdoor locations. Typical power consumption is low (around 6 W), useful where many cameras are deployed on a PoE switch.

• ONVIF support is indicated, but functionality can vary with firmware: confirm ONVIF profile compatibility with your NVR or VMS vendor before purchase.
• If audio or alarm I/O is required, check for -SU variants (built-in microphone) or other SKUs that expose audio/alarm ports.
• The fixed 4 mm lens is ideal for wide-area coverage but not adjustable on-site; choose lens focal length carefully during system design.
• PoE (802.3af) is supported—PoE simplifies wiring but verify switch capacity and power budgets for large deployments.

Use cases and scenarios where the camera excels

The DS-2CD2186G2-ISU is highly versatile. Typical scenarios include:

• Retail and commercial interiors:High-resolution 4K imagery captures product, customer and cashier areas with fine detail while AcuSense reduces motion-triggered alerts from staff or displays.
• Perimeter and car park monitoring:AcuSense helps distinguish vehicles and pedestrians from irrelevant motion (e.g., animals or waving vegetation), improving alarm relevance for security operators.
• Transport hubs and campus areas:Rugged dome housing and good low-light colour performance make it useful for sheltered outdoor walkways, platforms, and station concourses.
• Office and residential communal spaces:A discreet dome form and wide FOV make it suitable for lobbies, stairwells and shared facilities where vandal resistance is desired.

Comparison with similar products on the market

When evaluating the DS-2CD2186G2-ISU, consider these comparative points:

• Hikvision family vs other Hikvision lines:Compared with lower-tier EasyIP models without AcuSense, the DS-2CD2186G2-ISU adds deep-learning classification and DarkFighter imaging for better low-light colour and fewer false alarms. Compared to higher-end motorized or multi-sensor models, it’s more affordable but lacks varifocal zoom or multi-directional coverage.
• Against Axis, Dahua and Uniview rivals:Competitors offer similar 4K dome cameras with advanced low-light technologies (Axis Lightfinder, Dahua Starlight). DarkFighter performs strongly for colour at low lux and is competitive with these solutions; AcuSense is Hikvision’s mature analytics suite and aligns with competitor object-classification offerings. Pricing often positions Hikvision as a cost-effective option, but consider local compliance, firmware support and long-term software ecosystem preferences when choosing a brand.
• Fixed lens trade-offs:Some rivals provide motorized varifocal lenses for flexible on-site framing; the DS-2CD2186G2-ISU’s fixed 4 mm lens is simpler and less costly but requires careful placement to achieve desired coverage.

Customer feedback and installer notes

Official vendor-supplied testimonials are not included here; however, common feedback themes from installers and integrators working with Hikvision 4K AcuSense/DarkFighter domes generally include:

• Positive remarks about image clarity in both daytime and low-light conditions, with DarkFighter producing usable colour footage at lower lux than many conventional cameras.
• Appreciation for AcuSense analytics in reducing false alarms and focusing operator attention on relevant events, which cuts review time and storage costs when paired with event-driven recording.
• Notes to verify ONVIF and NVR compatibility before purchase—firmware differences can affect how analytics metadata and event streams are exposed to third-party systems.

Installers also frequently recommend planning camera heights and angles carefully because the fixed 4 mm lens means post-install reframing is limited.

Limitations and practical considerations

• The fixed 4 mm lens is not adjustable on-site; if zoom or flexible framing is needed, choose a varifocal alternative.
• ONVIF and feature support may vary by firmware—confirm integration details with your VMS/NVR supplier.
• PoE is 802.3af (not PoE+), which is sufficient for this camera’s power needs but should be confirmed against site PoE budgets.
• Regulatory markings (CE / UKCA) and regional compliance should be confirmed with the supplier for installations where certification is required.

Conclusion: Why choose the DS-2CD2186G2-ISU?

The Hikvision DS-2CD2186G2-ISU (4 mm) is a compelling choice when you need 4K detail, robust low-light colour imaging and smarter analytics to reduce false alarms—at an accessible price point. Its combination of DarkFighter imaging, AcuSense classification, True WDR and rugged mechanical protection makes it well-suited to retail, parking, perimeter and many semi-exposed locations. While the fixed lens and firmware-variant considerations should be accounted for during system design, the camera delivers a strong value proposition for integrators and end users seeking modern image quality and operationally useful analytics without moving into high-end multi-sensor or motorized-zoom devices.

For procurement, verify the specific SKU and options you need (for example, -SU variants for built-in audio), confirm ONVIF/VMS compatibility with your firmware version, and check local regulatory markings with your supplier. With those steps covered, the DS-2CD2186G2-ISU is a practical, capable option for a wide range of professional surveillance projects.