Blue Sea Systems DC Digital Multi-Function Meter with Alarm

The Blue Sea Systems DC Digital Multi-Function Meter combines current and voltage monitoring into one digital display, showing both how much current is flowing and what the battery voltage is doing, without needing two separate gauges taking up panel space.

Key features

• Displays amperage from -500 to +500 Amps
• Displays voltage from 0 to 60 Volts in 0.01 Volt increments
• High and low voltage audio and visual alarms
• Standard meter operates on 12/24/32/36/42V DC systems

This combination is particularly useful for tracking a battery bank's actual behavior under load — a voltage reading alone can look fine for a moment even while current draw is unsustainably high, and this meter surfaces both numbers together so a developing problem doesn't hide behind a single data point buried inside a display showing only one value.

The wide amperage range, spanning both charge and discharge direction, makes this meter suited to monitoring a house bank's overall behavior — whether it's being charged by an alternator or solar array, or discharged by connected house loads — from the same display, without needing to swap between separate charge and discharge meters. The audio and visual alarms give an early warning if voltage drifts outside a safe range, worth setting conservatively on a bank you specifically want to protect from deep discharge.

Because it operates across the full 12/24/32/36/42V DC range, this same meter works whether you're monitoring a standard 12V house bank or a higher-voltage 24V or 36V system, without needing a different model for a different boat's electrical system.