Hikvision DS-2CD2346G2H-IU(2.8mm)/GREY 4MP AcuSense Turret

Hikvision DS-2CD2346G2H-IU/GREY — 4 MP AcuSense turret in grey

This is the grey version of Hikvision's 4 MP G2H turret. Electronically it is identical to the white and black models: AcuSense human and vehicle classification, DarkFighter low-light performance, a built-in microphone and 30 m of infrared, in a compact all-metal IP67 housing at just 550 g. Only the finish differs.

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.

Why grey, rather than white or black

Grey is the finish most people never think to ask for, and it is often the right one. White disappears against render, painted soffits and pale stonework. Black disappears against dark fascias and exposed steel. Grey is the one that suits everything in between — galvanised steelwork, concrete, grey uPVC fascia, aluminium cladding, slate-grey composite panels, and the light industrial units and car parks where most of this hardware actually ends up.

It is also the least conspicuous choice on a mixed elevation. A white camera on grey cladding reads as an addition; a grey one reads as part of the building. Where the camera is meant to be seen as a deterrent, white remains the better pick.

Coverage and DORI

This SKU is the 2.8 mm version on an M12 mount: horizontal FOV 100.2°, vertical 54.7°, diagonal 119.7°, with depth of field from 1.9 m. Hikvision's published DORI figures are detect 63 m, observe 25 m, recognise 12 m, identify 6 m. Treat the identify figure as the working constraint — for evidential facial detail the subject needs to be inside roughly 6 m. A 4 mm version narrows the view to 81.1° and pushes identification to about 7 m.

The infrared reaches 30 m against a 63 m detection range, so after dark the illuminator sets the working distance rather than the optics.

Low power is its quiet advantage

Maximum 9 W over 802.3af Class 3 — among the lowest draws in the G2H family. The strobe-and-siren models in the same range need 802.3at at 18 W, twice as much. On a recorder with a fixed total PoE budget shared across every port, that difference decides how many cameras the machine will actually run.

What it has, and what it doesn't

The -IU suffix means a built-in microphone — audio recorded alongside video with no extra hardware. There is no speaker, no strobe, and no alarm or audio terminal block. Ethernet port, microSD slot and reset key are its only physical interfaces.

• Want two-way audio and an on-camera siren? The DS-2CD2346G2H-IS2U/SL adds both.
• Need to wire in a detector or sounder? This model has no alarm I/O.

Imaging

• 1/3" progressive scan CMOS, 2688 × 1520 at 25 fps (50 Hz)
• F1.0 aperture, 0.001 lux in colour, 0 lux with IR on
• 120 dB WDR for entrances and forecourts shot into strong backlight
• 30 m Smart Supplement Light IR at 850 nm
• 2.8 mm fixed lens, depth of field from 1.9 m
• BLC, HLC and 3D DNR; 4 programmable polygon privacy masks

Recording, storage and network

• H.265+/H.265/H.264+/H.264, 32 Kbps to 8 Mbps
• microSD/SDHC/SDXC to 512 GB, plus NAS (NFS, SMB/CIFS) and ANR to backfill footage recorded during a network outage
• ONVIF Profile S/T/G, ISAPI and SDK; iVMS-4200, Hik-Connect and HikCentral; up to 6 simultaneous live view channels
• The Ethernet port is 10/100, not gigabit — ample at an 8 Mbps ceiling

Build and environment

• Metal cover and metal main body, grey finish; IP67 to IEC 60529-2013
• −30 °C to 60 °C, humidity 95% or less non-condensing
• Ø138.3 mm × 115.4 mm, approx. 550 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 microSD card for edge recording or ANR backfill — not supplied
• A matching grey bracket if it is not going straight onto a flat soffit — a white mount under a grey camera undoes the point of specifying the finish

Frequently asked questions

Is the grey version any different to the white one?

Only the finish. Sensor, lens, analytics, ratings and power draw are identical.

Does it record sound?

Yes — the -IU has a built-in microphone. Check that recording audio is lawful and signposted for your site before enabling it.

Can it trigger a siren?

Not on its own. There is no speaker and no alarm output. The IS2U/SL version in this range adds a strobe and an audible warning.

Will it work on a third-party NVR?

It supports ONVIF Profile S, T and G, so it will record on most ONVIF recorders. AcuSense classification is best supported on Hikvision recorders.

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.