Home » Shop » Blue Sea 1850 M2 Vessel Systems Monitor

Blue Sea 1850 M2 Vessel Systems Monitor


Performs comprehensive monitoring of critical systems in one compact OLED digital monitor. Monitors DC System, AC System, Bilge, and Tank.

DC System Monitoring (up to two batteries)

One input monitors the DC voltage, state-of-charge, current for one battery bank and another input monitors the voltage of an additional battery bank. Alarms include high and low voltage, high current, and low battery.

AC System Monitoring

The VSM monitors a single AC voltage, current, and frequency. Alarms include high and low voltage, high current, and high and low frequency.

Bilge & Tank Monitoring

The VSM has two inputs that can be configured as a bilge or tank monitor. When configured as a bilge input, monitoring functions include pump active, cycle count in the last 24-hours, average cycles in a typical 24-hour period, and total cycles. High alarms can be set for both the minutes of run time in the last hour as well as the number or cycle counts in the last 24-hours. When configured as a tank input, tank status can be represented in both capacity (gallons or liters) or as a percentage of capacity. Custom tank shapes can be auto-calibrated or programmed. Both high and low level alarms can be set for all tanks.

NMEA 2000 certified and uses standard connectors. This allows a single network backbone to be installed for multiple NMEA 2000 devices. The M2 VSM can share certain monitoring functions with other NMEA 2000 compliant screens, such as CZone Displays Touch 5 & Touch 10.

Specification Heading Specification Detail
Weight 4.5 lbs
Meter Function Bilge | Current | Tank | Voltage
Nominal Voltage 120VAC | 230VAC | 12VDC | 24VDC | 48VDC
Operating Voltage 40-300VAC | 7-70VDC
Current Accuracy AC +/- 2%
Current Accuracy DC +/- 1%
Current Range AC 0-150A
Current Range DC -500 to 500A
Frequency 40-90Hz
Voltage Accuracy +/-1%


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Scroll to Top