• Blue Sea 8239 AC Digital Frequency Meter [8239]
  • Blue Sea 8239 AC Digital Frequency Meter [8239]

Blue Sea 8239 AC Digital Frequency Meter [8239]

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$226.79
$310.99
$226.79
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SKU: CWR-20750   UPC: 632085082390

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AC digital frequency monitoring for marine 120V and 240V single-phase systems, with a clear 40–90 Hz readout for checking onboard electrical power.

The Blue Sea Systems 8239 displays AC frequency across a 40–90 Hz range with 0.1 Hz resolution. Three display-brightness levels help you read the meter in varying onboard lighting conditions, while the splashproof front suits marine electrical installations. The meter is designed for surface mounting in a 2-inch diameter hole.

  • 40–90 Hz frequency range: Monitor AC frequency across common marine electrical applications.
  • 0.1 Hz resolution: View frequency changes with fine digital measurement increments.
  • Three brightness levels: Adjust the display for improved visibility in different lighting conditions.
  • Splashproof front: Helps protect the front of the meter from water exposure in marine environments.
  • Surface-mount installation: Fits a 2-inch diameter mounting hole for integrated panel installation.
  • Large 9/16-inch characters: Read the displayed frequency more easily from the electrical panel.
Use the 8239 to monitor frequency from shore power, generators, inverters, or other compatible AC sources on a boat or marine electrical panel. Its digital readout makes frequency changes easier to observe than an analog gauge, supporting routine checks of onboard power quality. The meter is intended for 120V and 240V AC single-phase systems and accepts an 80–249V AC input range. A splashproof front adds protection at the panel face, while selectable brightness levels help maintain visibility during daytime or low-light operation. Surface mounting through a 2-inch diameter hole supports clean integration into a custom or replacement electrical-monitoring panel.
Brand Blue Sea Systems
Model 8239
Product type AC digital frequency meter
Frequency range 40–90 Hz
Frequency resolution 0.1 Hz
Input voltage 80–249V AC
Compatible system 120V and 240V AC single-phase systems
Display character size 9/16 in
Dimensions 2.896 in W × 2.431 in H × 3.400 in D
Mounting cutout 2 in diameter
  • What does the Blue Sea 8239 measure?
    It measures AC frequency from 40 to 90 Hz.
  • What systems is this meter intended for?
    It is intended for 120V and 240V AC single-phase systems.
  • What input voltage does it accept?
    The specified input range is 80–249V AC.
  • Is the front splashproof?
    Yes. The front of the meter is splashproof for marine panel applications.
  • What mounting hole is required?
    The meter is designed for surface mounting in a 2-inch diameter hole.
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Blue Sea 8239 AC Digital Frequency Meter [8239]
Blue Sea 8239 AC Digital Frequency Meter [8239]