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Blue Sea Systems 1838 M2 AC Multimeter Dual Circuit Monitor

Manufacturer

Blue Sea Systems

<p>When electrical reliability can mean the difference between a successful voyage and a dangerous situation, marine professionals and enthusiasts turn to Blue Sea Systems. Founded in 1992, this American manufacturer has built a reputation for creating electrical components specifically engineered to withstand the unforgiving marine environment. Every product reflects a commitment to safety standards and real-world performance that has made Blue Sea Systems a leading name in marine and specialty vehicle electrical systems.</p> <h3>Engineering for the Marine Environment</h3> <p>Blue Sea Systems develops and manufactures dependable AC and DC electrical products for marine and specialized vehicle applications, designed in the USA and engineered to excel in challenging environments. The marine environment presents unique challenges—salt spray, constant vibration, temperature extremes, and moisture exposure—that can quickly degrade inferior electrical components. Blue Sea Systems addresses these challenges through careful material selection, rigorous testing protocols, and designs that prioritize both safety and serviceability. Their components are engineered for marine use and align with the intent of ABYC E-11: AC and DC Electrical Systems on Boats and relevant USCG electrical regulations.</p> <h3>Commitment to Safety Standards</h3> <p>Safety standards aren't just guidelines for Blue Sea Systems—they're fundamental to every product design. All Blue Sea Systems marine battery disconnect switches comply with the ABYC C-7 certification, demonstrating their commitment to meeting and exceeding industry safety requirements. The company maintains ABYC-certified employees across multiple departments, from engineering to technical support, ensuring deep expertise in marine electrical system design and installation standards.</p> <h3>Comprehensive Product Range</h3> <p>Blue Sea Systems offers an extensive catalog designed to address every aspect of marine electrical systems. Their <a href="/7262-blue-sea-systems-circuit-breakers-200260">circuit breakers</a> provide resettable overcurrent protection with trip-free designs and clear trip indication for quick diagnostics. For power management, their <a href="/7262-blue-sea-systems-battery-switches-manual-200149">battery switches</a> offer reliable methods for controlling battery banks and disconnecting loads during storage or emergencies, with ABYC C-7 compliance guaranteed.</p> <p>Monitoring system health is critical aboard any vessel, which is why their <a href="/7262-blue-sea-systems-battery-monitors-volt-meters-200146">battery monitors and volt meters</a> provide accurate real-time data to help operators make informed decisions about power usage and charging. The company's <a href="/7262-blue-sea-systems-terminal-blocks-bus-bars-201059">terminal blocks and bus bars</a> create organized, serviceable connection points that simplify installation and future modifications. For keeping batteries properly charged, Blue Sea Systems offers <a href="/7262-blue-sea-systems-battery-chargers-200141">battery chargers</a> engineered with features like automatic charging relay compatibility and proper charge profile management.</p> <h3>Built by Boaters, for Boaters</h3> <p>Blue Sea Systems was founded based on a commitment to create innovative high quality marine electrical products to improve the safety, simplicity, and reliability of boating, with employees who are active boaters applying their passion to designing, developing, and building products. This firsthand experience translates into practical features like modular layouts, standardized footprints, and installer-centric designs that streamline panel work and serviceability. The result is a product line that addresses real challenges faced on the water, backed by comprehensive technical documentation and support resources that help both professionals and DIY enthusiasts complete installations with confidence.</p>

Part Number

1838
06/01/2036 3:07 PM
Sale Price

$312.70

In Stock (10+)

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Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems M2 AC Multimeter monitors voltage, current, frequency, and power on two circuits or both legs of 120/240V systems. This advanced digital meter features a large, bright OLED display with auto-dimming capability that provides superior resolution and contrast compared to traditional LED displays.

Key Features:

  • Monitors AC amperage, voltage, frequency, and power on two separate circuits simultaneously
  • Supports programmable current transformer ratios for flexible installation
  • Built-in MOSFET external circuit relay allows control of external circuits based on measured values
  • Programmable 92dB alarm with configurable thresholds for high/low voltage, high current, and high/low frequency
  • Waterproof to IP66 standard with gasketed face for marine and harsh environments
  • Glass-reinforced nylon construction for durability
  • Tool-free snap-in mounting design

Technical Specifications:

  • Voltage Range: 50 to 250V AC with ±2.0% accuracy and 1V resolution
  • Current Range: Up to 300A with ±2.0% accuracy
  • Frequency Range: 40-90Hz with 1Hz resolution
  • Power Range: 0-45kW with 10W resolution (0-9990W) or 0.1kW resolution (10-45kW)
  • Input Voltage: 7-70V DC
  • Power Consumption: 0.3W minimum, less than 1.0W maximum
  • Display Size: 1 3/16" H x 2 1/4" W (28mm x 55mm)
  • Overall Dimensions: 3 1/16" H x 3 1/16" W x 17/32" D (78mm x 78mm x 14.05mm)
  • Mounting Hole: 2 1/8" diameter x up to 1" deep
  • Weight: 0.25 lbs (0.11 kg)

Ideal for monitoring shore power systems, generators, or AC distribution panels on boats, RVs, and marine applications. Backed by a three-year warranty.

Products specifications

Dimensions

3 1/16"H (78mm) x 3 1/16"W (78mm) x 17/32"D (14.05mm)

Type

Multi-Function Monitor

Best Use

120V AC Systems240V AC Systems

Display Type

DigitalCurrentFrequencyPowerVoltage

Warranty Details

Three Years

Out standing Guys!!

Good so far

prices are definitely cheaper than everyone else for the part I ordered. Arrived very quickly also.

Great

The application will work but I have to modify it slightly as the bolt circle in a little undersized for my application.

Very happy with their service. The product was at a great price and was shipped very quickly. Will buy from them again.

So far, great! Very easy to place order, crossing fingers on the shipping!

Great experience! I placed my order on Sunday and my programmer arrived on Thursday - with ground shipping. I unpacked the programmer and it functioned exactly as I had hoped. I will definitely consider purchasing from Autoplicity again!

Great

So far so good. I will see once the parts get delivered

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