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Whelen M4 DUO Series Dual Color Warning Light

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SKU: M4D-DUO
$220.99$237.99
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Description
Whelen Engineering has added split-color functionality to their popular M4 Series warning lights to create the M4 DUO Series. As the name implies, this enhanced light now offers dual color warning lights in a powerful LED package. Like the rest of the M Series, this 5.5”W light is designed for high-visibility and features Whelen's advanced linear optics for wide-angle visibility in a space-saving design.
Suitable for vertical or horizontal orientation on a vehicle, the M4 DUO is ideal for emergency, towing and utility trucks where effective lighting is needed in limited mounting spaces. Equipped with Whelen’s E Block™ and DVI technology, the M4 Series operates efficiently on 12/24V systems without excessive battery drain, providing bright, sustained lighting. Reduced power consumption means less strain on vehicle batteries.
Built for durability and reliability, this surface-mounted light features a hard-coated lens for reduced maintenance and long-term viability. Backed by a 10-year warranty, the sealed electronics and lenses make the M4 Series resistant to damage from dust, debris and harsh weather. Count on quality and clarity over the life of the light and appreciate the minimized downtime due to unnecessary light repairs.
These SAE Class 1 lights are available with chrome or black bezels for added protection and aesthetics. Choose from 24 color/lens/bezel combinations and up to 64 ScanLock™ patterns. The light’s syncing capabilities allow users to adjust lighting to produce a cohesive signal at any high-traffic scene. This customization creates a highly visible, coordinated warning system that maximizes awareness and operational safety in different environment.

  • Certifications:
  • SAE Class 1, KKK-1822F, NFPA 1901, NFPA 1917 EC65
  • Dimensions: 3.4″H x 5.5″W x 1.4″D
  • Voltage: 12/24
  • 24 color/lens/bezel combinations
  • Syncing capabilities
  • 64 ScanLock patterns
  • Hard-coated lens
  • E Block™ technology
  • Surface mounted
  • Vertical or horizontal orientation
  • Includes two installation screws
  • Chrome or black flanges available
  • 10-year warranty

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    Shipping & Returns

    Orders requiring Expedited Shipping must be placed by 12 p.m. CST. Orders weighing under 150 lbs. ship via UPS Ground, while orders exceeding that weight may ship via motor freight. All orders must be inspected within 10 days of arrival. Requests to return products must be filed within 45 days. See our full Shipping and Returns Policy by clicking the button below.

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    Product Information
    Item # MFG # Bezel Color
    M4D-DUO M4D-DUO -- --
    M4DD M4DD No Bezel Red/White
    M4DD-CB M4DD-CB Chrome Bezel Red/White
    M4DE M4DE No Bezel Blue/White
    M4DD-BB M4DD-BB Black Bezel Red/White
    M4DH M4DH No Bezel Green/White
    M4DJ-BB M4DJ-BB Black Bezel Red/Blue
    M4DH-BB M4DH-BB Black Bezel Green/White
    M4DF-BB M4DF-BB Black Bezel Amber/White
    M4DE-CB M4DE-CB Chrome Bezel Blue/White
    M4DL-CB M4DL-CB Chrome Bezel Red/Green
    M4DF M4DF No Bezel Amber/White
    M4DL-BB M4DL-BB Black Bezel Red/Green
    M4DM-BB M4DM-BB Chrome Bezel Blue/Amber
    M4DM M4DM No Bezel Blue/Amber
    M4DJ M4DJ No Bezel Red/Blue
    M4DK-BB M4DK-BB Black Bezel Red/Amber
    M4DF-CB M4DF-CB Chrome Bezel Amber/White
    M4DL M4DL No Bezel Red/Green
    M4DM-CB M4DM-CB Black Bezel Blue/Amber
    M4DE-BB M4DE-BB Black Bezel Blue/White
    M4DJ-CB M4DJ-CB Chrome Bezel Red/Blue
    M4DK-CB M4DK-CB Chrome Bezel Red/Amber
    M4DH-CB M4DH-CB Chrome Bezel Green/White
    M4DK M4DK No Bezel Red/Amber