Black Friday Pricing ON NOW

Audio HD IP 2K Dome Security Camera, 150ft night vision, wide angle lens


Safe & Secure

Apps are protected with end-to-end data encryption.


Risk Free

Return for any reason within 30 days of delivery.

bi secure payment

Flex Payments

Spread out payments with easy financing options.

No Monthly Fees

Local recording protects privacy and saves money.

LNB8921BW 4K nocturnal security camera

Record video and sounds with this Nocturnal security camera from Lorex. Not only will this security camera provide crystal clear 2K quality resolution footage, the built-in microphone will also add a whole new layer of security coverage. Designed to fit seamlessly against walls or ceilings thanks to its unique flat design, this all-black Nocturnal security camera will be highly visible during the day and extremely discreet at night. Long-range night vision, a wide angle lens, and a durable metal housing also makes this security camera a perfect add-on for any IP home or business surveillance system.

Nocturnal Security Cameras



4 MP camera

Indoor / outdoor IP security camera



Double the resolution of HD 1080p



Maximum night vision range



Ideal for monitoring wide, open areas

nocturnal security camera video features icon

Video Features

Don't miss out on important details with 2K security monitoring. Learn the technology within this security camera that ensures that you capture the evidence you need.

4K nocturnal security camera features

Camera Features

Learn more about this camera's "listen in" audio feature. It is also surrounded by a full metal housing, so you can count on year-round protection for years to come.

noctorunal IPinstallation and settings icon

Installation and Settings

This audio dome belongs to our line of easy-to-install IP cameras. It also offers plenty of customizable features when connected to a compatible 2K or 4K NVR.

Video Features

LNB8921BW nocturnal 4K resolution security camera

2K security monitoring

Leave nothing to question. The 4MP (megapixel) image sensor at the core of this security camera is capable of producing vivid 2K superHD security footage. It also comes with a wide 120° angle lens that is perfect for monitoring doorways or open areas.

4K nocturnal security camera resolution chart

2K vs 1080p resolution

This 2K resolution security camera contains double the amount of pixels as a 1080p security camera. Instead of recording at a pixel ratio of 1920 × 1080 - a total of 2,073,600 pixels, this nocturnal audio dome records a pixel ratio of 2688 × 1520 - a total of 4,085,760 pixels. One of the main benefits of a higher pixel count is the quality of the digital zooms when reviewing footage.

Color Night Vision footage

Infrared Night Vision

See further into the dark than ever before. Nocturnal security cameras come with high powered infrared LEDs that flood the scene in front of the camera with infrared lighting. Invisible to the naked eye, but not to the camera, this infrared lighting will allow your security camera to see in complete darkness.

Color Night Vision (CNV™)

Add external lights around your nocturnal security camera to utilize our revolutionary Color Night Vision technology. With CNV, you'll be able to capture a whole new level of details, such as the color of a car or the color of a person's clothes, which may prove invaluable if needed for evidence.

electronic shutter eShutter nocturnal security camera


The higher the shutter speed, the sharper the video. A high shutter speed, however, requires a lot of light. Thankfully, this camera's eShutter™ (electronic shutter) figures out this balance for you, so you will always have optimized lighting with the least amount of motion blur.

IR cut filter gif nocturnal security camera

Active mechanical lens filter

An Active Mechanical Lens Filter, otherwise known as the IR Cut Filter, is used by this camera to prevent UV and infrared rays from entering the lens during the day. Without it, the coloring of the video would not be accurate. This lens filter will then automatically disengage at night to allow the infrared light in.

30 FPS nocturnal 4K security camera

Real-time 30FPS recording rate

This security camera is capable of recording 2K security footage at 30 frames-per-second (FPS). 30 FPS will provide exceptionally smooth on-screen movement and provide you with more frames to choose from when reviewing footage.

HDR nocturnal security camera

Enhanced security monitoring with HDR

This security camera uses HDR (High Dynamic Range) technology to ensure that you capture the most important details, regardless of lighting conditions. Dynamic range is measured as the difference between the brightest point and the darkest point of the video. HDR technology uses this difference to automatically adjust the picture's brightness, resulting in optimized, highly-detailed security video.

DNR nocturnal 4K security camera

Increased clarity in low-light situations

This camera uses 3D-DNR (Digital Noise Reduction) technology to filter out digital noise from low-light scenes, as well as any noise caused by motion. By eliminating this graininess, your camera will deliver a cleaner, more accurate image with better clarity, sharpness, and improved motion detection.

security camera with auto white balance AWB

Auto white balance

An auto white balance feature automatically adjusts the color settings so that white areas in real life will be reproduced as white in your footage. This will then ensure that all other colors will be accurate. White balance customization is also available through the NVR as well for additional levels of white balance control to suit your needs.

HEVC logo H.265 security camera model LNB8921BW

HEVC / H.265 compression

High Efficiency Video Compression (HEVC or H.265) compression technology is used by this camera to compress video file sizes without any noticeable difference in quality. When compared to the previous compression technology, H.264, HEVC can compress data up 40% more with the same level of quality. Please note that an NVR capable of receiving this type of compression is necessary to utilize this feature.

Camera Features

Nocturnal audio dome security camera

Expanded coverage with built-in microphone

A built-in microphone within this security camera allows for listen-in audio recording.* Audio monitoring can provide you with additional information (such as voices), which could prove to be invaluable should an intrusion or event occur on your property. Audio can also help you interpret events, even if the action takes place away from the camera's field of view.

* Please note, audio recording without consent is illegal in certain jurisdictions. Lorex Corporation assumes no liability for use of its products that does not conform with local laws.

learn more lorex audio IP security cameras
learn more lorex audio IP security cameras
4K nocturnal weatherproof security camera

All-weather security camera

With an environmental rating of IP67, you can be confident that this security camera can endure anything from torrential downpours to freezing snowstorms. This level of durability lets you install this security camera where you need it most.


These Lorex security cameras have been rigorously tested in the most frigid conditions to ensure that they will continue to function even in extreme cold. Tested in temperatures as low as -22°F / -30°C, they are guaranteed to keep you secure, no matter what they endure.

LNB8921BW 4K security camera weather ratings


Heat Rating

140°F | 60°C

Heat Rating

Cold Rating

-22°F | -30°C

Cold Rating

Metal nocturnal security camera housing

Heavy duty metal camera housing

The housing of this security camera has been constructed with high-grade aluminum. This means that this camera can be left outdoors for years without issue.

IK10 vandalproof security camera

IK10 vandal resistance

This camera comes with an IK10 vandal resistance rating, and is strong enough to withstand violent impacts, unlike conventional plastic security cameras. It is especially useful for "within reach" installations.

Installation and Customization

easy to install IP security camera

Easy PoE installation

Connect this audio security camera to an NVR with a single Cat5e (or above) ethernet cable. This cable provides video transmission, audio transmission, power to the camera, and a stable network connection all at once. Furthermore, the lack of power cable allows you to install this security camera virtually anywhere you need it (up to 300ft), since the camera does not need to be plugged into a nearby power source. For more distance, please see our selection of PoE switches.

Regional motion zones security camera

Regional motion zones

Create up to four different regional motion zones through your NVR. This allows you to adjust the sensitivity (the amount of movement required to register that movement) and the threshold (how much movement is required before creating a motion "event") at four different levels. This means that more important areas, such as a doorway, can be adjusted so that any movement at all will trigger recording (or create a motion event), while other sections of the frame, like a bush, would need a much higher level of motion.

Privacy masking security camera

Privacy masking

If there are some elements within your camera's field of view (such as inside windows) that you do not wish to record, then you can use your NVR to mask out these sections by drawing a square or rectangle over them.

nocturnal security camera custom video orientation

Custom video orientation

This security camera can be installed on the ceiling or on the side of walls without worrying about how the video feed will look. You can easily change the visual orientation with the NVR after installation. The video feed can be rotated 90°, 180°, and 270°, and can also be flipped upside down and mirrored.



What's Included?


High Definition HD IP 2K Dome Security Camera with Audio Features:

  • High definition 2K 4MP image sensor delivers superior detail1
  • Infrared cut filter ensures accurate color representation
  • Day/Night mode: picture automatically switches to Color Night Vision / B&W delivering better clarity in low light conditions
  • Night vision range up to 150ft2
  • Built-in microphone for listen-in audio3
  • IK10 Vandal Resistant Rating
  • 3D-DNR Digital Noise Reduction for clear, accurate images
  • Close up recognition in the dark with SmartIR
  • Wide angle 120° field of view
  • Weatherproof for outdoor & indoor installation (IP67 Rated)4
  • Cold climate capability (-22° ~ 140°F / -30° ~ 60°C)
  • Wall mount bracket included for flexible installation
  • ONVIF profiles S & T approved
Effective pixel area 2688(H)x1520 (V) IR LED quantity 10pcs
IR LED viewing angle 10 x 120° Camera FOV (H / V / D) H:120° V:58°
Imaging Device 4mp, 1/3 Inch Effective Pixels 2688(H)x1520 (V)
Imager Type CMOS Image Readout Progressive Scan
Day/Night Auto(ICR)/Color/B/W Field of View (H) H:120°
IR Illumination 45m Video Output RJ45
Electronic Shutter Range Auto/Manual, 1/3(4)~1/10000s Lens Type Fixed
Lens Mount Board-in Type Iris Type Fixed
Focal Length 2.8mm Aperture F2.0
Video Compression H.265 / H.264 / MJPEG Aspect Ratio 16 : 9
Frame rates (Maximum) 2K @ 30fps Dynamic Range 100dB
Noise Reduction 3D Digital Zoom 16x
Camera Body Material Aluminum Alloy Power Input DC12V, PoE
Power over Ethernet PoE (802.3af) Power Consumption (Max) 3.2W
Storage Temperature -30°C~+60°C Operating Humidity Less then 95% RH
Operating Temperature -30°C~+60°C Cold Start Temperature -30°C

Each LND4750ABW Includes:

1 × dome audio camera
1 × Mounting kit
1 × Allen key*
1 × 100ft extension cable
1 × Camera Wall-Mount Bracket

1. 2K HDIP cameras are compatible with 2K HDIP DVR recorders only. For a list of compatible recorders please visit
2. Stated IR illumination range is based on ideal conditions in typical outdoor night time ambient lighting and in total darkness. Actual range and image clarity depends on installation location, viewing area, and light reflection / absorption level of object. In low light, the camera will switch to black and white.
3. Audio recording without consent is illegal in certain jurisdictions. Lorex Corporation assumes no liability for use of its products that does not conform with local laws.
4. Not intended for submersion in water. Installation in a sheltered location recommended.

*1 per multi-camera pack
**A "4-in-1" Power Adapter that provides power to four cameras or individual power adapters may be provided, depending on product configuration.

All trademarks belong to their respective owners. No claim is made to the exclusive right to use the trademarks listed, other than the trademarks owned by Lorex Corporation. We reserve the right to change models, configurations or specifications without notice or liability. Product may not be exactly as shown. Images are simulated.

Reviews and Q&A

You may also like

Recently viewed