Overview

Hikvision 4MP AcuSense Strobe Light Bullet Camera 2.8mm Lens DS-2CD2046G2H-I2U/SL
The Hikvision DS-2CD2046G2H-I2U/SL 4MP AcuSense bullet network camera is designed for high-accuracy outdoor surveillance with active deterrence capabilities. Built for residential, commercial, and industrial environments, it combines advanced AI detection, strong low-light performance, and real-time warning functions to help prevent intrusions before they escalate. With its compact bullet design and IP67-rated housing, it delivers reliable security monitoring in harsh weather conditions while maintaining crisp image clarity day and night.

Description

This 4MP AcuSense bullet camera integrates intelligent human and vehicle classification with strobe light and audible alarm deterrence, making it suitable for proactive security installations. It captures high-definition 2688 x 1520 resolution video with excellent clarity even in challenging lighting conditions thanks to 120 dB wide dynamic range technology. The built-in dual microphones enable clear two-way audio communication, while onboard storage support up to 512GB ensures flexible recording options without relying solely on external systems. With H.265+ compression, it reduces bandwidth and storage consumption while maintaining image quality, making it efficient for continuous surveillance deployments.

Features

Active Security and Deterrence Technology
Designed to actively prevent incidents, this Hikvision AcuSense camera uses a combination of white light strobe and audio alarm to warn intruders instantly. This makes it more than just a monitoring device, as it helps deter suspicious activity in real time.

Key deterrence functions include:

• Strobe light warning system with configurable activation
• Built-in speaker with high sound pressure output for audible alerts
• Motion-triggered alarm response based on AI classification
• Live two-way audio communication for immediate interaction

Intelligent Detection and AI Analytics
Powered by deep learning algorithms, the camera focuses on reducing false alarms by accurately distinguishing between humans and vehicles. It is suitable for perimeter protection and targeted surveillance scenarios where precision detection is critical.

AI-based functions include:

• Human and vehicle classification for motion events
• Face capture capability for identification support
• Perimeter protection rules such as line crossing, intrusion, and region detection
• Scene change detection for tamper awareness

High-Definition Imaging Performance
The camera delivers sharp and detailed surveillance footage with 4MP resolution and advanced image enhancement technologies. It maintains visibility even in low light or strong backlight conditions.

Imaging highlights:

• 2688 x 1520 maximum resolution
• 120 dB wide dynamic range for balanced lighting
• Minimum illumination as low as 0.001 lux in color mode
• IR night vision up to 40 meters
• 3D digital noise reduction and defog processing for clearer images

Lens and Field of View
This model is equipped with a fixed 2.8mm lens that provides a wide viewing angle suitable for monitoring open areas and entrances.

• 2.8mm lens horizontal field of view 100 degrees
• Vertical field of view 55 degrees
• Diagonal field of view 120 degrees
• Fixed focal design for stable coverage
• Depth of field optimized from approximately 1.9 meters to infinity

Video Compression and Streaming Efficiency
Advanced encoding formats ensure smooth video transmission while optimizing storage usage. This makes the camera suitable for multi-camera systems and remote monitoring setups.

Supported formats and performance:

• H.265, H.264, H.265+, H.264+ compression
• Adjustable bitrate from 32 Kbps to 8 Mbps
• Multiple streaming options including main, sub, and third stream support
• Up to 6 channels simultaneous live view capability
• ROI (Region of Interest) support for focused image quality control

Audio and Communication Capabilities
The built-in dual microphones and speaker system provide full audio interaction capabilities, allowing real-time communication and environmental sound capture.

• Two built-in microphones for stereo sound pickup
• Mono audio output with noise filtering
• Multiple audio codec support including G.711, AAC, MP3, and others
• Environmental noise reduction for clearer communication

Storage, Connectivity and Integration
Flexible integration options make this camera compatible with modern surveillance systems and network environments.

• Built-in microSD card slot supporting up to 512GB storage
• RJ45 10M/100M adaptive Ethernet port
• PoE support (IEEE 802.3at) for simplified installation
• Compatible with Hik-Connect and iVMS-4200 platforms
• ONVIF support for third-party system integration

Durability and Installation Design
Engineered for long-term outdoor use, the camera features a robust metal housing and weather resistance suitable for demanding environments.

• IP67-rated protection against dust and water
• Operating temperature range from minus 30 degrees to 60 degrees
• Compact bullet design for flexible mounting
• Adjustable pan, tilt, and rotation for installation flexibility

SKU reference: DS-2CD2046G2H-I2U/SL(2.8mm)

Key Technical Highlights

• 4MP resolution at 2688 x 1520
• 2.8mm fixed lens with wide-angle coverage
• IR night vision up to 40 meters
• 120 dB WDR for challenging lighting conditions
• AI-based human and vehicle detection
• Strobe light and audio alarm deterrence
• Dual microphones with two-way audio support
• Up to 512GB onboard storage support
• IP67 weatherproof rating for outdoor use

Specifications

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Specifications
Product Code	HK-311327168
Camera
Image Sensor	1/3" Progressive Scan CMOS
Max. Resolution	2688 x 1520
Min. Illumination	Color: 0.001 Lux @ (F1.0, AGC ON),B/W: 0 Lux with IR
Shutter Time	1/3 s to 1 / 100,000 s
Angle Adjustment	Pan: 0degrees to 360degrees,tilt: 0degrees to 90degrees,rotate: 0degrees to 360degrees
Day & Night	IR cut filter
Lens
Focal Length & FOV	2.8 mm, horizontal FOV 100degrees, vertical FOV 55degrees, diagonal FOV 120degrees
	4 mm, horizontal FOV 81degrees, vertical FOV 45degrees, diagonal FOV 95degrees
Lens Type	Fixed focal lens, 2.8 and 4 mm optional
Lens Mount	M12
Iris Type	Fixed
Aperture	F1.0
Depth of Field	2.8 mm: 1.9 m to ∞
	4 mm: 2.5 m to ∞
DORI
DORI	2.8 mm: D: 63 m, O: 25 m, R: 12 m, I: 6 m
	4 mm: D: 78 m, O: 31 m, R: 15 m, I: 7 m
Illuminator
Supplement Light Type	IR
Supplement Light Range	Up to 40 m
Smart Supplement Light	Yes
IR Wavelength	850 nm
Video
Main Stream	50 Hz: 25 fps (2688 x 1520, 1920 x 1080, 1280 x 720)
	60 Hz: 30 fps (2688 x 1520, 1920 x 1080, 1280 x 720)
Sub-Stream	50 Hz: 25 fps (1280 x 720, 640 x 480, 640 x 360)
	60 Hz: 30 fps (1280 x 720, 640 x 480, 640 x 360)
Third Stream	50 Hz: 10 fps (1920 x 1080, 1280 x 720, 640 x 480, 640 x 360)
	60 Hz: 10 fps (1920 x 1080, 1280 x 720, 640 x 480, 640 x 360)
	*Third stream is supported under certain settings.
Video Compression	Main stream: H.265 / H.264 / H.265+ / H.264+
	Sub-stream: H.265/H.264/MJPEG
	Third stream: H.265/H.264
	*Third stream is supported under certain settings.
Video Bit Rate	32 Kbps to 8 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)	1 fixed region for main stream and sub-stream
Audio
Audio Compression	G.711/G.722.1/G.726/MP2L2/PCM/MP3/AAC-LC
Audio Type	Mono sound
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/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, SNMP, WebSocket, WebSockets, SRTP, SFTP
Simultaneous Live View	Up to 6 channels
API	ONVIF (Profile S, Profile T, Profile G),ISAPI,SDK,ISUP
User/Host	Up to 32 users
	3 user levels: administrator, operator, and user
Security	Password protection, complicated password, HTTPS encryption, 802.1X authentication (EAP-TLS, EAP-LEAP, EAP-MD5), watermark, IP address filter, basic and digest authentication for HTTP/HTTPS, WSSE and digest authentication for Open Network Video Interface, RTP/RTSP over HTTPS, control timeout settings, security audit log, TLS 1.1/1.2/1.3, host authentication (MAC address)
Network Storage	NAS (NFS, SMB/CIFS),Auto Network Replenishment (ANR)
Client	iVMS-4200,Hik-Connect
Web Browser	Plug-in required live view: IE 10, IE 11
	Plug-in free live view: Chrome 57.0+, Firefox 52.0+, Edge 89+
	Local service: Chrome 57.0+, Firefox 52.0+, Edge 89+
Image
Image Parameters Switch	Yes
Image Settings	Rotate mode,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
SNR	≥ 52 dB
Image Enhancement	BLC,HLC,3D DNR,Defog
Privacy Mask	4 programmable polygon privacy masks
Interface
Ethernet Interface	1 RJ45 10 M/100 M self-adaptive Ethernet port
Built-in Microphone	Yes, 2 built-in microphones
On-Board Storage	Built-in memory card slot, support microSD/microSDHC/microSDXC card, up to 512 GB
Built-in Speaker	Max. power consumption: 2 W, max. sound pressure level: 10 cm: 110 dB.
Reset Key	Yes
Event
Basic Event	Motion detection (support alarm triggering by specified target types (human and vehicle)),video tampering alarm,exception
Smart Event	Scene change detection
Linkage	Upload to FTP/NAS/memory card,notify surveillance center,send email,trigger alarm output,trigger recording,trigger capture,audible warning,strobe light
Deep Learning Function
Face Capture	Yes
Perimeter Protection	Line crossing, intrusion, region entrance, region exiting
	Support alarm triggering by specified target types (human and vehicle)
General
Power	12 VDC ± 25%, 1 A, max. 12 W,Ø5.5 mm coaxial power plug,reverse polarity protection
	PoE: IEEE 802.3at, Class 4, max. 16 W
Material	Metal
Dimension	Ø74.4 mm x 176.3 mm (Ø2.93" x 6.94")
Package Dimension	234 mm x 120 mm x 117 mm (9.2" x 4.7" x 4.6")
Weight	Approx. 515 g (1.1 lb.)
With Package Weight	Approx. 840 g (1.9 lb.)
Storage Conditions	-30 degreesC to 60 degreesC (-22 degreesF to 140 degreesF). Humidity 95% or less (non-condensing)
Startup and Operating Conditions	-30 degreesC to 60 degreesC (-22 degreesF to 140 degreesF). 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
General Function	Heartbeat,mirror,flash log,password reset via email,pixel counter,anti-banding
Flashing Light	/SRB model: Red and Blue Light
	/SL model: White Light
Approval
Safety	UL: UL 62368-1
	CB: IEC 62368-1: 2014+A11
	CE-LVD: EN 62368-1: 2014/A11: 2017
Environment	CE-RoHS: 2011/65/EU
	WEEE: 2012/19/EU
	Reach: Regulation (EC) No 1907/2006
EMC	CE-EMC: EN 55032:2015+A1:2020, EN 50130-4:2011+A1:2014, EN IEC 61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A1:2019+A2:2021
	RCM: AS/NZS CISPR 32: 2015
	IC: ICES-003: Issue 7
	KC: KN32: 2015, KN35: 2015
Protection	IP67: IEC 60529-2013