Hikvision DS-2CD3956G2-ISU 5MP 360° Fisheye Camera with Audio

SKU: DS-2CD3956G2-ISU
Price shown is for reference only. Contact us for the final price.
Regular price $396.50

100% Official Brand / Serial Number Verifiable / 3-Year Warranty


Ships Same or Next Day
Over $99 Free Shipping
30-Day Returns
  • 360° panoramic view — one camera replaces multiple fixed units
  • 120dB True WDR handles strong backlight without washing out details
  • Built-in microphone captures audio alongside video in real time
  • External audio I/O lets you connect speakers and additional mics
  • 8m IR night vision keeps monitoring reliable after dark
  • Supports up to 512GB microSD card for weeks of local recording
  • Flexible power — 12V DC or PoE (802.3af) simplifies installation

Details

360-Degree Panoramic 5 MP Fisheye Surveillance

The Hikvision DS-2CD3956G2-IS(U) is a 5 MP AcuSense Fisheye Network Camera designed for comprehensive blind-spot-free monitoring in retail stores, commercial offices, hotel lobbies, and classrooms. Powered by a 1/2.7" progressive scan CMOS sensor and an ultra-wide 1.05 mm fixed lens (horizontal FOV 360°, vertical FOV 180°), it captures crisp 2560 × 1920 video at up to 30 fps, replacing multiple traditional fixed cameras with a single streamlined ceiling installation.

Flexible Dewarping Modes and Edge AI Analytics

Equipped with onboard hardware and software dewarping, the camera transforms curved fisheye video into intuitive rectilinear views tailored to operator requirements:

  • Versatile Display Modes: Supports Fisheye View, 180° Panorama View, Dual-Channel Panorama, 4PTZ virtual tracking, and combined Fisheye + 3PTZ multi-view modes.
  • Deep-Learning Heat Mapping: Generates customer dwell time and traffic density visual maps to assist commercial business intelligence.
  • HEOP Open Platform: Offers 1.5 TOPS AI computing power with 400 MB Smart RAM and 2 GB eMMC memory, supporting third-party deep-learning algorithm imports via C/C++ and OpenDevSDK.
  • 120 dB True WDR & 8 m IR: Balances difficult backlighting across indoor entrances while built-in 850 nm smart IR provides up to 8 meters of discreet night illumination.

Discreet Footprint, Audio Integration, and Standard PoE

Measuring only 119.9 mm in diameter and weighing 320 g, the camera blends discreetly into ceiling surfaces. It features a built-in microphone (-U model) with environmental noise filtering, 1 audio line in/out, 1 alarm input/output, 1 RS-485 port, and a microSD slot supporting up to 512 GB local storage. It operates efficiently via standard PoE (802.3af, max 7.5 W) or 12 VDC.

Specification

Camera
Image Sensor 1/2.7" Progressive Scan CMOS
Max. Resolution 2560 × 1920
Min. Illumination Color: 0.017 Lux @ (F2.25, AGC ON),B/W: 0 Lux with IR
Shutter Time 1/3 s to 1/100,000 s
Day & Night IR cut filter
Lens
Lens Type Fixed focal lens, 1.05 mm
Focal Length & FOV 1.05 mm, horizontal FOV: 360°, vertical FOV:180°
Lens Mount M12
Iris Type Fixed
Aperture F2.25
Depth of Field 0.1 m to ∞
DORI
DORI D: 21 m, O: 8 m, R: 4 m, I: 2 m
Illuminator
Supplement Light Type IR
Supplement Light Range Up to 8 m
Smart Supplement Light Yes
IR Wavelength 850 nm
HEOP
Open Resources Memory: 60 MB, Smart RAM: 400 MB, eMMC: 2 GB
Computing Power 1.5 TOPS
Open CapabilityHEOP 1.0 OpendevSDK
Deep Learning Structure Caffe,PyTorch,TensorFlow
Programming LanguageC,C++
Video
Main Stream 50 Hz: 25 fps/60 Hz: 30 fps: Fisheye View: 2560 × 1920, 2048 × 1536, 1280 × 960 180 Panorama View: 2048 × 1152, 1280 × 720 180 Dual Channel Panorama View: 4096 × 576, 2048 × 288 4PTZ View: camera 01/camera 02/camera 03/camera 04: 1200 × 900 Fisheye + 3PTZ View: camera 01: 2048 × 1536, 1280 × 960 camera 02/camera 03/camera 04: 1200 × 900
Sub-Stream 50 Hz: 25 fps/60 Hz: 30 fps: Fisheye View: 640 × 480, 640 × 360 180 Panorama View: 640 × 480, 640 × 360 Fisheye + 3PTZ View: camera 01: 640 × 480, 640 × 360
Video Compression Main stream: H.265/H.264/H.264+/H.265+ Sub-stream: H.265/H.264/MJPEG
Video Bit Rate 32 Kbps to 16 Mbps
H.264 Type Baseline Profile/Main Profile/High Profile
H.265 Type Main Profile
Bit Rate Control CBR/VBR
Scalable Video Coding (SVC) H.264 and H.265 encoding
Region of Interest (ROI) 5 fixed regions for main stream and sub-stream
Target Cropping Yes
Fisheye Display
Mount Type Ceiling mounting
Decoding Mode Support hardware decoding and software decoding
Audio
Audio Compression G.711ulaw/G.711alaw/G.722.1/G.726/MP2L2/PCM/MP3/AAC-LC
Audio Bit Rate 64 Kbps (G.711ulaw/G.711alaw)/16 Kbps (G.722.1)/16 Kbps (G.726)/32 to 192 Kbps (MP2L2)/8 to 320 Kbps (MP3)/16 to 64 Kbps (AAC-LC)
Audio Sampling Rate 8 kHz/16 kHz/32 kHz/44.1 kHz/48 kHz
Environment Noise Filtering Yes
Network
Protocols TCP/IP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, DDNS, RTP, RTSP, RTCP, NTP, UPnP, SMTP, IGMP, 802.1X, QoS, IPv4, IPv6, UDP, Bonjour, SSL/TLS, PPPoE, SFTP, ARP, SNMP, WebSocket, WebSockets, SRTP
Simultaneous Live View Up to 20 channels
API Open Network Video Interface (Profile S, Profile G, Profile T), ISAPI, SDK, ISUP
User/Host Up to 32 users. 3 user levels: administrator, operator and user
Security Password protection, complicated password, HTTPS encryption, IP address filter, Security Audit Log, basic and digest authentication for HTTP/HTTPS, TLS 1.2, WSSE and digest authentication for Open Network Video Interface
Network Storage NAS (NFS, SMB/CIFS), auto network replenishment (ANR) Together with high-end Hikvision memory card, memory card encryption and health detection are supported.
Client iVMS-4200, Hik-Connect, Hik-Central
Web Browser Plug-in required live view: IE 10, IE 11 Plug-in free live view : Chrome 57.0+, Firefox 52.0+ Local service: Chrome 57.0+, Firefox 52.0+
Image
Image Parameters Switch Yes
Image Settings Saturation, brightness, contrast, sharpness, gain, white balance adjustable by client software or web browser
Day/Night Switch Day, Night, Auto, Schedule
Wide Dynamic Range (WDR) 120 dB
Image Enhancement BLC, HLC, 3D DNR
SNR ≥ 52 dB
Interface
Ethernet Interface 1 RJ45 10 M/100 M self-adaptive Ethernet port
On-Board Storage Built-in memory card slot, support microSD/microSDHC/microSDXC card, up to 512 GB
Built-in Microphone -U: Yes
Audio 1 input(s) (line in), four-core terminal block, max. input amplitude: 3.3 Vpp, input impedance: 4.7 KΩ, interface type: non-equilibrium, 1 output(s) (line out), four-core terminal block, max. output amplitude: 3.3 Vpp, output impedance: 100 Ω, interface type: non-equilibrium
Alarm 1 input, 1 output (max. 12 VDC, 30 mA)
RS-485 1 RS-485 (Half duplex, HIKVISION, Pelco-P, Pelco-D, self-adaptive)
Reset Key Yes
Deep Learning Function
Heat Map Yes
General
Power
Dimension Ø119.9 mm × 41.2 mm (Ø4.7" × 1.6")
Package Dimension 150 mm × 125 mm × 99 mm (5.9" × 4.9" × 3.9")
Approx. 320 g (0.7 lb.)
With Package Weight Approx. 510 g (1.1 lb.)
General Function Anti-banding, heartbeat, privacy mask, flash log, password reset via email, pixel counter
Storage Conditions -10 °C to 50 °C (-14 °F to 122 °F). Humidity 95% or less (non-condensing)
Startup and Operating Conditions -10 °C to 50 °C (-14 °F to 122 °F). Humidity 95% or less (non-condensing)
Language 33 languages: English, Russian, Estonian, Bulgarian, Hungarian, Greek, German, Italian, Czech, Slovak, French, Polish, Dutch, Portuguese, Spanish, Romanian, Danish, Swedish, Norwegian, Finnish, Croatian, Slovenian, Serbian, Turkish, Korean, Traditional Chinese, Thai, Vietnamese, Japanese, Latvian, Lithuanian, Portuguese (Brazil), Ukrainian
Environment

FAQ

How does the fisheye dewarping feature work on client software and NVRs?

The camera captures a raw 360-degree circular fisheye stream and supports both hardware and software dewarping. Through client platforms like iVMS-4200, Hik-Connect, or compatible Hikvision NVRs, operators can view the image as a standard 180-degree panorama, split four-way virtual PTZ channels, or simultaneous fisheye with regional zoom views.

What are the benefits of the built-in HEOP architecture?

Hikvision Embedded Open Platform (HEOP 1.0) provides 1.5 TOPS of dedicated edge computing power, 400 MB Smart RAM, and 2 GB eMMC storage. This allows system integrators to deploy customized third-party computer vision algorithms (developed in C/C++ using Caffe, PyTorch, or TensorFlow frameworks) directly on the camera.

How much local storage does the microSD slot support?

The camera accepts microSD cards up to 512GB. At typical bitrates, that gives you weeks of continuous recording stored locally on the camera — no cloud subscription required.

Is this fisheye camera suitable for outdoor use?

This model is designed specifically for indoor ceiling or pendant installations with an operating temperature range of -10 °C to 50 °C and no specialized anti-corrosion or IP67/IP68 weatherproof rating. For outdoor or high-moisture environments, a dedicated outdoor-rated dome enclosure is required.