Actisense EMU-1: NMEA 0183 to NMEA 2000 Gateway Engine Monitoring USB Interface

Bridge your analogue engine signals to the modern NMEA 2000 network with the Actisense EMU-1. This rugged gateway digitises up to six analogue inputs from one or two engines and publishes real‑time engine data to NMEA 2000 displays and instruments across the vessel. No need to replace existing gauges—just connect them and gain a unified, on‑screen view of engine health and performance.

What it does

The EMU-1 converts analogue engine metrics (temperature, pressure, RPM, fluid levels, and other sensor signals) into standardized NMEA 2000 messages. It supports two engines sharing a common ground on a single unit, enabling you to monitor core engine parameters on every NMEA 2000 display aboard. It also provides a USB interface for local PC configuration and diagnostics, letting you fine‑tune mappings and alarms without dismantling the cockpit.

Key features

• Converts up to six analogue gauge signals into NMEA 2000 messages
• Monitors two engines (sharing a common ground) with a single EMU-1
• Six gauge/parameter inputs, four alarm inputs, two auxiliary inputs, and two tach inputs
• Customised IP65 enclosure for harsh marine environments
• Diagnostic LEDs for quick onboard health checks
• Wide power range: 9 to 35 V DC to fit diverse vessel electrical systems
• USB interface for PC-based configuration and diagnostics
• Optional DIN rail mounting kit for clean, space‑savvy installs
• Tilt & Trim tab monitoring support added to broaden sensor coverage
• Total engine hours logged via the tach input for maintenance planning

Why this matters

With the EMU-1, you gain proactive insight into engine performance without ripping out existing instrumentation. The gateway’s two‑engine capability, combined with its flexible inputs, means you can capture a complete picture of engine health and maintenance needs across a two‑engine vessel. The rugged IP65 design and straightforward wiring path reduce installation time and exposure to the marine elements, while the USB configuration path simplifies setup and calibration.

Who is it for

Ideal for boat owners and professional crews who rely on analogue engine gauges but want the visibility and integration of a modern NMEA 2000 network. It’s particularly valuable for vessels with two engines, vessels that must preserve existing sensors, and installations where quick diagnostics and easy future upgrades matter most.

Setup and integration tips

For configuration, connect the EMU-1 to a compatible Actisense PC gateway (NGX-1 or NGT-1) and use the Toolkit along with NMEA Reader to map inputs to the appropriate NMEA 2000 variables. This approach keeps your cockpit simple while delivering richer, networked engine data. An optional DIN rail kit helps keep the installation tidy in compact equipment spaces.

Technical snapshot

• Inputs: 6 gauge/parameter inputs, 4 alarm inputs, 2 auxiliary inputs, 2 tach inputs
• Power: 9–35 V DC
• Enclosure: IP65, rugged marine design
• Network: NMEA 2000 gateway; analogue data to digital network
• Engine coverage: supports two engines on a single EMU-1
• Diagnostics: status LEDs
• Mounting: Optional DIN rail kit
• Additional: Tilt & Trim tab support
• Interface: USB for PC configuration and diagnostics