Blue Sea 8245 AC Analog Micro Voltmeter - 2" Face, 0-250 Volts AC

The Blue Sea 8245 AC Analog Micro Voltmeter is a compact 2-inch dial instrument designed for monitoring AC voltage in marine electrical systems. This meter measures 0–250 volts AC and features a dial marked in 5-volt increments for quick, accurate readings at a glance. Built by Blue Sea Systems, a manufacturer trusted for marine electrical monitoring equipment, the 8245 delivers straightforward voltage diagnostics without the complexity of digital displays or external power supplies.

The meter operates on a simple 2-wire connection to AC hot and neutral lines, and critically, it senses and powers itself from the same connection it monitors. This design eliminates the need for a separate power source, making installation cleaner and reducing wiring complexity in tight engine compartments or cabin spaces. The backlit meter face ensures readability in low-light conditions—a practical feature for night fishing runs or emergency diagnostics. The analog needle movement provides immediate visual feedback, which many marine electricians prefer over digital readouts for detecting subtle voltage fluctuations or AC ripple.

This micro voltmeter is suited for cruisers, commercial fishing vessels, and any boat relying on AC power systems—whether monitoring shore power input, generator output, or AC-powered equipment loads. Serious boaters and marine technicians use instruments like this to verify proper voltage supply to galley equipment, air conditioning systems, and battery chargers, catching problems before they damage sensitive electronics or create safety hazards. The compact 2-inch face fits standard flush-mount panels without taking up excessive real estate.