




Blue Sea Systems 1850 M2 Vessel Monitor System VSM
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1850 M2 Vessel Systems Monitor performs comprehensive monitoring of four critical systems in one compact organic LED digital monitor. The unit monitors DC systems (up to two batteries) — voltage, state-of-charge, current for one battery bank and voltage for a second bank — with alarms for high/low voltage, high current, and low battery. AC system monitoring includes a single AC voltage, current and frequency with alarms for high/low voltage, high current, and high/low frequency. Bilge & tank monitoring: two configurable inputs operate as bilge or tank monitors. Bilge mode tracks pump active status, cycle counts (last 24 hours), average cycles, total cycles and supports run-time alarms; tank mode shows capacity (gallons or liters) or percentage, supports auto-calibration of custom tank shapes and high/low level alarms. Meter types include bilge, current, tank, voltage; frequency range 40–90 Hz; current range 0–150A AC / -500 to 500A DC; nominal voltages supported include 12V, 24V, 48V DC and 120V/230V AC. NMEA 2000 certified; uses standard connectors and can share monitoring functions with other NMEA 2000 compliant displays (e.g., CZone Displays Touch 5 & Touch 10).
- 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
- 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. When configured as a tank input, tank status can be represented in both capacity (gallons or liters). Custom tank shapes can be auto-calibrated or programmed, and alarms can be set for both bilge and tank monitoring.
- 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
- 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
- Meter: Bilge/ Current/ Tank/ Voltage, Nominal Voltage: 12V/24V/36V/48V DC, Voltage Range: 40-300V AC/ 0-70V DC, Current Accuracy: +- 1% AC/ +- 1% DC, Current Range: 0-150A AC/ -500 to 500A DC, Frequency: 40-90Hz, Voltage Accuracy: +-1%
Specifications:
| Materials & Construction | |
| Color | Black |
| Material | Other |
| Product Details | |
| Fishing Technique | Any |
| Included Components | Systems Monitor |
| Measurement Type | Voltmeter, Ammeter, Frequency Meter |
| Min. Operating Voltage | 7 Volts (DC) |
| Model Name | Blue Sea Systems Boating Electrical Equipment |
| Number of Items | 1 |
| Power Source | Battery Powered |
| Size | Standard |
| Sport Type | Boating |
| Warranty Description | 5 Year Warranty |
| Sizing & Dimensions | |
| Height | 4.75 inches |
| Length | 9.5 inches |
| Product Dimensions | 9.5 x 4.75 x 4.75 inches |
| Weight | 4 pounds |
| Width | 4.75 inches |
| Technical Specifications | |
| Current Accuracy | ±1% AC / ±1% DC |
| Current Range | 0-150A AC / -500 to 500A DC |
| Frequency | 40-90Hz |
| Meter | Bilge, Current, Tank, Voltage |
| Nominal Voltage | 12V/24V/36V/48V DC; 120V/230V AC |
| Specification Met | [Some] |
| Voltage Accuracy | ±1% |
| Voltage Range | 40-300V AC / 0-70V DC |

