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MEGApix® 2.1 Megapixel Snapit™ Indoor Dome IP Camera with IR
Model: DWC-MD421TIRB
These MEGApix® IP cameras deliver crystal-clear images at 2.1 Megapixel 1080p resolution and real-time 30fps. The unique Snapit™ housing is easy to install and includes CleanView™ dome treatment. All MEGApix® cameras are ONVIF conformant, assuring their successful integration with any open platform solution on the market.

Motorized Zoom Auto-Focus Lens
An Auto Focus lens with motorized zoom removes the need for the complicated and detailed manual focus adjustment or zoom configurations at the camera. The motorized zoom module allows you to adjust the camera's view and zoom remotely, without the need to be near the camera. Then, the autofocus lens communicates with the camera to automatically determine what area of the camera’s FoV should be in focus.
CleanView™ Hydrophobic Dome Coating Repels Water, Dust and Grease
Digital Watchdog's new CleanView™ dome enclosures repel water and dust to maintain a camera's image quality. A technologically-advanced coating alleviates spotting and smudges that can affect the performance of the camera.

Click here to learn more about the CleanView™ process
Smart IR™
Smart IR™ adjusts the image for IR cameras to eliminate LED light reflection and white spots in the image. By breaking down the camera’s field of view into five zones, Smart IR allows for even distribution of the IR light. This prevents excessive illumination on images that are in the front of the scene and offers a clear image in B/W without any loss of detail.
Wide Dynamic Range (WDR)
Wide Dynamic Range technology mechanically allows capturing an entire scene in challenging lighting conditions. One shutter is set to a short exposure, capturing the bright areas in the FoV, while the other is set for a long exposure, capturing the dark areas in the FoV. The camera then interlaces the images and combines them, capturing both areas with no loss of detail. This allows for an image capture even when there are very bright and dark areas in the camera’s field of view or images are distorted by a strong backlight.
  • 2.1 Megapixel Image Sensor (1080p, 30fps)
  • Wide Dynamic Range (WDR)
  • Dual Codecs (H.264, MJPEG) with Simultaneous Streaming
  • 2.8~12mm Remote Auto Focus P-Iris Lens
  • Snapit™ Easy Installation Housing
  • Smart IR™ with Intelligent Camera Sync. 70ft Range
  • Smart DNR™ 3D Digital Noise Reduction
  • True Day/Night with Mechanical IR Cut Filter
  • Auto Gain Control (AGC)
  • Auto White Balance (AWB)
  • Programmable Privacy Zones
  • Motion Detection
  • Micro SD/SDHC Class 10 Card Slot for Event and Continuous Recording (Card Not Included)
  • Alarm Sensor Input
  • Relay Output
  • Web Server Built-in
  • Black Housing Models Available
  • PoE and DC12V
  • OnVIF Conformant, Profile S
  • 5 Year Warranty


Image Sensor
1/2.7“ 2.1MP CMOS
Minimum Illumination
F1.4 (30IRE): 0.12 Lux [Color]
2.1 Megapixels, 1080P (1920x1080)
Total Pixels (H X V)
1928(H) X 1088(V)


Focal Length
Lens Type
P-Iris Auto Focus Lens
IR Distance70ft Range IR
Optical Zoom
Field of View
106° ~ 32°


Audio Input/Output1/1
Audio CompressionG.711
Alarm Input/ Output1/1


4.72 x 3.97 Inch (120 x 100.8 mm)
Housing Material
Housing Type
Snapit Indoor Dome
0.66 lbs (0.3kg)


Frame Rate
Up to 30fps at All Resolutions
802.3 Compliance 10/100 LAN
Maximum Simultaneous User Access
5 Simultaneous Users
OnVIF Conformant
SecurityPassword authentication, Multi-level user configuration
Memory Slot
Micro SD / SDHC / SDXC up to 128GB, Card not Included
Streaming Capability
Dual-Stream at Different Rates and Resolutions
Video Compression Type
H.264, MJPEG
ResolutionH.264: 1920x1080 ~ CIF
MJPEG: 1280x720 ~ CIF
Video Management Software
DW Spectrum™ IPVMS
Web Viewer
OS: Windows®, Mac® OS, Linux®
Browser: Internet Explorer®, Google Chrome®, Mozilla Firefox®, Safari®


Smart DNR™ 3D Digital Noise Reduction
Auto Gain Control
Alarm Notifications
Notifications Via E-mail, FTP Server or SD Card Recording
Day and Night
Auto, Day (Color), Night (B/W)
Shutter Mode
Auto, Manual, Anti-Flicker
Programmable Privacy Zones
4 Programmable Privacy Masks
Shutter Speed
Wide Dynamic Range
On, Off


Operating Humidity
Less than 90% (Non-Condensing)
Operating Temperature
-40°F ~ 122°F (-40°C ~ 50°C)
Power Consumption
AF Working MAX 7.5W, 625mA
LED Off : 2.5W, 208mA
LED On : 4.2W, 350mA
DC 12V, PoE (IEEE802.3af Class 3)
MEGApix CaaS
DW Spectrum
MEGApix® 2.1 Megapixel Indoor Box IP Camera
MEGApix® 2.1 Megapixel Indoor/Outdoor Bullet IP Camera with IR
MEGApix® 2.1 Megapixel Snapit™ Indoor Dome IP Camera
MEGApix® 2.1 Megapixel Snapit™ Indoor Dome IP Camera
MEGApix® 2.1 Megapixel Snapit™ Indoor Dome IP Camera with IR
Converter Plate for Electronic Gang Box
Indoor Dome Wall Mount Bracket
White Converter Plate for Electronic Gang Box
Title Type Size Download
Camera Accessories Compatibility Chart pdf 3.80 MB
DW Tech Bulletin P-iris pdf 0.49 MB
DWC-MD421 A&E Specifications doc 0.09 MB
DWC-MD421TIRB Datasheet pdf 0.15 MB
DWC-MD421TIRB Manual pdf 2.02 MB
DWC-MD421TIRB Quick Start Guide pdf 0.36 MB
DWC-MV421D_TIR Manual pdf 2.18 MB
MEGApix 1080p Snapit Indoor A&E Specs doc 0.09 MB
MEGApix Series Brochure pdf 1.34 MB
MEGApix Series Presentation pptx 8.33 MB
Snapit Indoor Cold Start Report pdf 0.18 MB
Title Type Version Compatibility Size Download
1st Gen MEGApix 1080p Firmware V2.1.6.0 zip V2.1.6.0 MEGApix 1080p 1st Generation Cameras with FW Starting with 2 9.08 MB
2nd Gen MEGApix 1080p Firmware vA1.1.2_20170901 zip vA1.1.2_20170901 MEGApix 1080p 2nd Generation Cameras with FW Starting with A 38.49 MB
Megapix Backup Viewer Ext. URL Backup Viewer N/A
DW IP Finder v4.3.15 zip v4.3.15 22.03 MB
Frequently asked questions
Q. Are DW cameras ONVIF compliant?
A. Yes, all DW cameras are ONVIF Profile S Compliant with the exception of our Panzilla.
Q. Can I record to my camera as a stand-alone?
A. Yes, as long as the camera has an SD card slot available and an SD card no larger than 64GB. For further details on how to, please refer to your camera's manual.
Q. Can my camera be accessed remotetly?
A. Yes, the camera may be accessed remotely as long as the appropriate port forwarding rules have been created on the router. Please refer to your camera's manual.
Q. How can I locate cameras on my network?
A. To locate cameras on your local network you can use IP_Finder located on our website for download. Or you can also locate cameras using a 3rd party application such as ODM (ONVIF DEVICE MANAGER) available online.
Q. How can I upgrade the firmware to my cameras?
A. The camera's firmware can be updated via the Internet Explorer browser. Many of our DW cameras firmware can be updated with the latest DW IP_Finder located on our website for download. This software is only Windows-based applicable.
Q. Is there a DW application available to view my camera?
A. There is no application other than the Internet Explorer browser to view stand-alone DW cameras.
Q. My camera is blurry at night but clear in the day
  1. Check the lens cover for dirt, debris, scratches, smudges or residue
  2. Tilt camera away from or remove nearby reflective objects
  3. Make sure rubber gasket is present and correctly seated on lens
  4. Clean lens cover with water and dry microfiber cloth
Q. What are the default credentials for DW cameras?
A. The majority of our DW cameras have a default username and password of admin/admin. Please refer to your camera manual or the Quick Setup Guide.