Dahua Lite Series DH-IPC-HDBW2431F-AS-S2

4MP Lite IR Fixed-focal Dome Network Camera

Series Overview

With upgraded H.265 encoding technology, Dahua Lite series network cameras offer efficient video encoding capacity, saving bandwidth and storage space. This camera features the latest starlight technology for better color images in low illumination conditions. It supports SD card storage, dust-proof, waterproof, and vandal-proof functions, complying with IP67 and IK10 standards.

Key Features

4MP, 1/3" CMOS image sensor, low illuminance, high image definition.
Outputs max. 4MP (2688 × 1520) @20 fps, and supports 2560 x 1440 (2560 x 1440) @25/30 fps.
H.265 codec for high compression rate and ultra-low bit rate.
Built-in IR LED with a maximum IR distance of 30 m.
Region of Interest (RoI), SMART H.264+/H.265+, flexible coding, applicable to various bandwidth and storage environments.
Supports Rotation mode, WDR, 3D DNR, HLC, BLC, and digital watermarking for various monitoring scenes.
Intelligent detection: Intrusion, tripwire.
Abnormality detection: Motion detection, video tampering, audio detection, no SD card, SD card full, SD card error, network disconnection, IP conflict, illegal access, voltage detection.
Alarm: 1 input, 1 output; Audio: 1 input, 1 output; built-in Microphone; supports max. 256 GB Micro SD card.
12V DC/PoE power supply.
IP67, IK10 protection.

4MP | Smart Codec | WDR | Starlight | IVS | IP67 | IK10

Technology Highlights

Smart H.265+ & Smart H.264+

With an advanced scene-adaptive rate control algorithm, Dahua's smart encoding technology achieves higher encoding efficiency than H.265 and H.264, providing high-quality video while reducing storage and transmission costs.

Wide Dynamic Range (WDR)

Dahua network cameras with advanced Wide Dynamic Range (WDR) technology provide clear details in environments with strong brightness contrast. Both bright and dark areas can be captured clearly, even in high brightness or backlight shadow conditions.

Starlight Technology

Dahua Starlight technology is optimized for low-illuminance environments, providing clear, colorful video. It ensures good image quality even in ultra-low light conditions.

Intelligent Video System (IVS)

Leveraging advanced video algorithms, Dahua IVS technology supports intelligent functions such as tripwire and intrusion detection.

Protection (IP67, IK10, Wide Voltage)

IP67: The camera has passed strict tests for dust and water immersion. It features dust-proof functionality and can operate normally after being submerged in 1 meter of water for 30 minutes.
IK10: The enclosure is designed to withstand impacts, resisting punches more than 5 times from a 5 kg hammer falling from a height of 40 cm (equivalent to 20J of impact energy).
Wide Voltage: The camera supports ±30% input voltage tolerance, making it suitable for outdoor environments with unstable voltage.

Technical Specifications

Camera

Parameter	Value
Image Sensor	1/3" 4Megapixel progressive CMOS
Max. Resolution	2688 (H) × 1520 (V)
ROM	128 MB
RAM	128 MB
Scanning System	Progressive
Electronic Shutter Speed	Auto/Manual 1/3 s–1/100,000 s
S/N Ratio	> 56 dB
Minimum Illumination	0.008 Lux @ F1.6
Illumination Distance	30 m (98.4 ft)
Illuminator On/Off Control	Auto/Manual
Illuminator Number	8 (IR LED)
Pan/Tilt/Rotation Range	Pan: -30°–30°, Tilt: 0°–80°, Rotation: 0°–360°

Lens

Parameter	Value
Lens Type	Fixed-focal
Mount Type	M12
Focal Length	2.8 mm, 3.6 mm
Max. Aperture	F1.6
Field of View	2.8 mm: Horizontal 102° × Vertical 55° × Diagonal 121° 3.6 mm: Horizontal 84° × Vertical 45° × Diagonal 100°
Iris Type	Fixed
Close Focus Distance	2.8 mm: 0.9 m (3.0 ft) 3.6 mm: 1.6 m (5.2 ft)

DORI Distance

Lens	Detect	Observe	Recognize	Identify
2.8mm	56.0 m (183.7 ft)	22.4 m (73.5 ft)	11.2 m (36.7 ft)	5.6 m (8.5 ft)
3.6mm	80.0 m (262.5 ft)	32.0 m (105.0 ft)	16.0 m (52.5 ft)	8.0 m (26.2 ft)

Smart Event

Type	Description
IVS	Tripwire; Intrusion

Video

Parameter	Value
Video Compression	H.265; H.264; H.264B; MJPEG (only supported by sub stream)
Smart Codec	Smart H.265+/ Smart H.264+
Video Frame Rate	Main stream: 2688 × 1520 (1 fps–20 fps), 2560 × 1440 (1 fps–25/30 fps) Sub stream: 704 × 576 (1 fps–25 fps), 704 × 480 (1 fps–30 fps)
Stream Capability	2 streams
Resolution	2688 × 1520 (2688 × 1520); 2560 × 1440 (2560 × 1440); 2304 × 1296 (2304 × 1296); 1080p (1920 × 1080); 1.3M (1280 × 960); 720p (1280 × 720); D1 (704 × 576/704 × 480); VGA (640 × 480); CIF (352 × 288/352 × 240)

Image Processing & Features

Parameter	Value
Bit Rate Control	CBR/VBR
Video Bit Rate	H.264: 32 kbps–6144 kbps H.265: 12 kbps–6144 kbps
Day/Night	Auto (ICR)/Color/B/W
BLC	Yes
HLC	Yes
WDR	120 dB
White Balance	Auto/natural/street lamp/outdoor/manual/regional custom
Gain Control	Auto/Manual
Noise Reduction	3D DNR
Motion Detection	OFF/ON (4 areas, rectangular)
Region of Interest (RoI)	Yes (4 areas)
Smart Illumination	Yes
Image Rotation	0°/90°/180°/270° (Support 90°/270° with 2688 × 1520 resolution and lower)
Mirror	Yes
Privacy Masking	4 areas

Audio

Parameter	Value
Built-in MIC	Yes
Audio Compression	G.711a; G.711Mu; G.726; AAC

Alarm

Parameter	Value
Alarm Event	No SD card; SD card full; SD card error; network disconnection; IP conflict; illegal access; motion detection; video tampering; tripwire; intrusion; audio detection; voltage detection; security exception; local alarm

Network

Parameter	Value
Network Interface	RJ-45 (10/100 Base-T)
SDK and API	Yes
Protocol	IPv4; IPv6; HTTP; HTTPS; TCP; UDP; ARP; RTP; RTSP; RTCP; RTMP; SMTP; FTP; SFTP; DHCP; DNS; DDNS; QoS; UPnP; NTP; Multicast; ICMP; IGMP; NFS; PPPoE; 802.1x; Bonjour
Interoperability	ONVIF (Profile S/Profile G/Profile T); CGI; Milestone; Genetec; P2P
User/Host	20
Edge Storage	Dahua Cloud; FTP; SFTP; Micro SD card (support max. 256 G); NAS
Browser	IE, Chrome, Firefox
Management Software	Smart PSS, DSS, DMSS
Mobile Phone	iOS; Android

Certifications

Certification	Standard
CE-LVD	EN60950-1
CE-EMC	Electromagnetic Compatibility Directive 2014/30/EU
FCC	47 CFR FCC Part 15, Subpart B
UL/CUL	UL60950-1 CAN/CSA C22.2 No.60950-1-07

Physical and Environmental

Port

Type	Description
Audio Input	1 channel (RCA port)
Audio Output	1 channel (RCA port)
Alarm Input	1 channel in: 5mA 3V–5V DC
Alarm Output	1 channel out: 300mA 12V DC

Power

Parameter	Value
Power Supply	12V DC/PoE
Power Consumption	<5.4W

Environment

Parameter	Value
Operating Temperature	-40°C to +60°C (-40°F to +140°F)/less than ≤ 95% RH
Storage Temperature	-40°C to +60°C (-40°F to +140°F)
Ingress Protection	IP67; IK10

Structure

Parameter	Value
Casing	Metal
Dimensions	55 mm × Φ108.9 mm (2.2" × Φ4.3")
Net Weight	0.38 kg (0.8 lb)
Gross Weight	0.52 kg (1.1 lb)

Ordering Information

Type	Part Number	Description
4MP Camera	DH-IPC-HDBW2431FP-AS-S2	4MP Lite IR Fixed-focal Dome Network Camera, PAL
4MP Camera	DH-IPC-HDBW2431FN-AS-S2	4MP Lite IR Fixed-focal Dome Network Camera, NTSC
Junction Box	PFA139	Junction Box
Wall Mount	PFB204W	Wall Mount
Pole Mount	PFA152-E	Pole Mount
Mount Adapter	PFA106	Mount Adapter
Ceiling Mount	PFB220C	Ceiling Mount
Power Adapter	PFM321D	12V DC 1A Power Adapter
Ethernet Extender	LR1002-1ET/1EC	Single-port Long Reach Ethernet over Coax Extender
Integrated Mount Tester	PFM900-E	Integrated Mount Tester
SD Card	PFM114	TLC SD Card

Optional Accessories

PFA139: Junction Box
PFB204W: Wall Mount
PFA152-E: Pole Mount
PFB220C: Ceiling Mount
PFA106: Mount Adapter
PFM321D: 12V DC 1A Power Adapter
LR1002-1ET/1EC: Single-port Long Reach Ethernet over Coax Extender
PFM900-E: Integrated Mount Tester
PFM114: TLC SD Card

Dimensions

Diagram showing dimensions: Overall diameter Φ108.9 mm [4.29 inches], mounting hole circle Φ91.0 mm [3.58 inches], camera height 55.0 mm [2.17 inches], and lens diameter Φ4.5 mm [0.18 inches].

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