Blue Sea Systems 1838 M2 AC Multimeter Dual Circuit Monitor

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.