Maretron Switch Indicator Module – SIM100 (SIM100-01)

Enhance your vessel’s digital monitoring and control capabilities with the Maretron Switch Indicator Module SIM100 (SIM100-01). This versatile NMEA 2000®-ready module monitors the status of up to eight discrete electrical switches — such as bilge pumps, lights, sensors, door/hood contacts, and other on/off circuits — and reports their states directly to your NMEA 2000® network.

Designed for reliable marine performance, the SIM100 seamlessly integrates with Maretron displays, chartplotters, and vessel monitoring software so you can view switch status in real time at the helm or from multiple networked stations. Whether you’re tracking bilge pump activation, monitoring hatch or door positions, or adding auxiliary system indicators, this module turns simple switch closures into meaningful system data.

Built with a rugged, marine-ready enclosure and sealed NMEA 2000® connectors, the SIM100 is engineered for corrosion resistance and long service life in the harsh offshore environment. Easy to install and expand, this module helps simplify wiring while centralizing switch data on your vessel’s network backbone.

Technical Specifications

• Brand: Maretron

• Model: Switch Indicator Module (SIM100)

• Part Number: SIM100-01

• Network Interface: NMEA 2000® (IEC 61162-3)

• Switch Inputs: 8 discrete, normally open/closed inputs

• Connectors: Sealed NMEA 2000® male/female

• Operating Voltage: Powered directly from NMEA 2000® network

• Environmental Rating: Marine-rated enclosure

• Indicators: NMEA 2000® data for monitoring and alarms

Benefits

• Centralizes switch status on your vessel’s digital network

• Reduces wiring complexity by consolidating multiple inputs

• Provides real-time visibility of important circuits at helm

• Works with Maretron DSM displays, N2KView® software, and compatible chartplotters

• Improves situational awareness and system diagnostics

Applications

• Bilge pump status monitoring

• Navigation or courtesy light indication

• Hatch, door, or compartment security status

• Auxiliary system or sensor state reporting

• Tank pump or valve position monitoring

• Alarm state integration into vessel monitoring systems

Summary for the User

The SIM100 is the perfect bridge for "smart-enabling" your existing safety equipment. Instead of relying on a simple buzzer for a high-water alarm, the SIM100 can send a digital alert to your phone or chartplotter. It is a highly reliable, low-power solution for comprehensive vessel security and safety monitoring.

Installation Tip: When wiring float switches or bilge pumps, ensure you use marine-grade heat-shrink connectors to prevent corrosion at the terminal points, as the SIM100 relies on sensing small electrical continuity changes.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Manufacturer : Maretron
Manufacturer Part No : SIM100-01
UPC : 873804000190