Hikvision DS-2CD2186G2H-ISU(4mm) 4K AcuSense Vandal Dome

Hikvision DS-2CD2186G2H-ISU (4 mm) — 4K AcuSense vandal dome

This is the 4 mm version of Hikvision's 4K G2H dome, and it is the strongest camera in the whole G2H range on two counts: it has the widest dynamic range and the longest identification distance. A 1/1.8" sensor at 3840 × 2160 behind an F1.0 lens, in an IP67 / IK10 aluminium alloy housing.

AcuSense deep-learning classification separates people and vehicles from foliage, rain, shadows and animals, so line crossing, intrusion, region entrance and region exiting trigger only on real targets. Face capture is supported.

130 dB WDR — the only one in the range

Every other G2H camera is rated at 120 dB. This one is 130 dB. That extra stop of dynamic range is aimed squarely at the hardest scene in most buildings: a doorway or shutter shot from inside, where the interior is dim and the daylight behind the subject is ten thousand times brighter. It is the difference between a silhouette and a face.

Ten metres to identification

At 4 mm the DORI figures are detect 109 m, observe 43 m, recognise 21 m, identify 10 m — against 8 m at 2.8 mm, and 6 to 7 m on the 4 MP models in the same family. On a forecourt or car park where the camera cannot sit directly over the action, that is the difference between footage showing that an incident happened and footage that identifies who was there.

The trade-off is standoff: minimum focus is 3.8 m at this lens. Mounted directly above a doorway at head height the image will be soft. This camera wants room — which suits its longer reach anyway.

Be realistic about night, too. The infrared reaches 30 m against a 109 m detection range, so after dark the illuminator is the limit, not the optics.

Vandal rated, with terminals

• IK10 to IEC 62262 — tested against a 20 joule strike, the top impact class
• IP67, with aluminium alloy base and cover
• Built-in microphone, plus audio line in and line out on a two-core terminal block
• 1 alarm in, 1 alarm out
• Only 9.5 W on standard 802.3af PoE — light for a 4K camera

One specification to check before you design around it

The alarm output is rated maximum 12 VDC, 30 mA — far below the 24 VDC / 1 A outputs on the bullets and PTRZ domes in this family. Thirty milliamps drives a logic input or a small relay coil. It will not drive a sounder, a strike or a lamp directly. If the camera needs to switch a real load, put an interposing relay between the two.

Imaging

• 1/1.8" progressive scan CMOS, 3840 × 2160 at 25 fps (50 Hz)
• F1.0 aperture, 0.0008 lux in colour, 0 lux with IR on
• 130 dB WDR, plus BLC, HLC and 3D DNR
• 30 m Smart Supplement Light IR at 850 nm
• 4 mm fixed lens on an M16 mount, depth of field from 3.8 m
• 4 programmable polygon privacy masks

Recording, storage and network

• H.265+/H.265/H.264+/H.264, 32 Kbps to 16 Mbps
• microSD/SDHC/SDXC to 512 GB with ANR and card health detection, plus NAS (NFS, SMB/CIFS)
• ONVIF Profile S/T/G, ISAPI, SDK and ISUP; iVMS-4200, Hik-Connect and HikCentral
• The Ethernet port is 10/100, not gigabit — comfortable at 16 Mbps, but worth knowing on a 4K camera

Build and environment

• Aluminium alloy base and cover; IP67 and IK10
• Pan 0° to 355°, tilt 0° to 75°, rotate 0° to 355°
• −30 °C to 60 °C, humidity 95% or less non-condensing
• Ø121.5 mm × 97.6 mm, approx. 525 g

What you'll need with it

• An 802.3af (or better) PoE switch or NVR port, or a 12 VDC supply
• An AcuSense-capable Hikvision NVR to carry human/vehicle classification through to smart search on the recorder
• A recorder that supports 8 MP on the channel count you need
• A microSD card for edge recording or ANR backfill — not supplied
• An interposing relay if the alarm output must switch anything beyond 30 mA
• Storage sized for 4K at up to 16 Mbps per camera

Frequently asked questions

How far can it identify someone?

About 10 m at this 4 mm lens, or 8 m at 2.8 mm — the longest in the G2H family, and roughly half again the 4 MP and 6 MP models.

What does 130 dB WDR buy me over 120 dB?

Roughly an extra stop of range between the brightest and darkest parts of a frame. It matters most shooting into daylight from inside a building.

How close can it focus?

3.8 m at 4 mm. Give it room — it is not a doorway camera.

Can the alarm output drive a siren?

Not directly. It is a 12 VDC, 30 mA signalling contact, so it needs a relay module.

Trade pricing

Zenith Security Co is an authorised Hikvision partner. Prices shown are for trade account holders — contact us for account terms and stock availability.