SKU: 74321130619

Actisense NMEA 2000 Engine Monitoring Unit - Analog to NMEA2000 Engine Gateway [EMU-1-BAS]

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Description

Actisense NMEA 2000 Engine Monitoring Unit - Analog to NMEA2000 Engine Gateway [EMU-1-BAS]NMEA 2000 Engine Monitoring Unit Analog to NMEA2000 Engine Gateway Share engine information on the NMEA 2000 bus. The Actisense EMU 1 is a specialized analogue to NMEA 2000 Gateway which converts data from analogue engine gauges senders into NMEA 2000 data. The EMU 1 enables the sharing of engine data throughout the NMEA 2000 bus. It digitizes analogue engine sensors, enabling NMEA 2000 display devices to monitor the connected engine(s) on a vessel.

NMEA 2000 Engine Monitoring Unit - Analog to NMEA2000 Engine Gateway

Share engine information on the NMEA 2000 bus.

The Actisense EMU-1 is a specialized analogue to NMEA 2000 Gateway which converts data from analogue engine gauges/senders into NMEA 2000 data. The EMU-1 enables the sharing of engine data throughout the NMEA 2000 bus. It digitizes analogue engine sensors, enabling NMEA 2000 display devices to monitor the connected engine(s) on a vessel.

The EMU-1 can monitor vital engine parameters such as temperature, pressure RPM and fluid levels from up to two engines.

The EMU-1 has a PC-based configuration tool that allows the settings inside the EMU-1 to be changed to best suit the engine it is working with, making it a flexible solution for many engine makes and models.

An Actisense PC to NMEA 2000 Gateway (NGX-1/NGT-1) is required to configure the EMU-1.

The NGX-1 or NGT-1 must be used to update the firmware, connect the Toolkit and display data on a PC for diagnostic and information purposes, using NMEA Reader. Please visit the NGX-1 page and/or NGT-1 page for product details.

Features:

  • Enables analogue signals to be converted to NMEA 2000 messages
  • Convert signals from up to two engines (that share a common ground) with a single EMU-1
  • 6 gauge / parameter inputs
  • 4 alarm inputs
  • 2 additional auxiliary inputs
  • 2 Tacho inputs
  • Customized IP65 case
  • Diagnostic LED’s
  • Wide power compatibility of 9 to 35VDC
  • No need to change an existing engine
  • Easy installation
  • Easy to configure to suit the connected engine
  • Connect signals from fluid level gauges (that share a common ground with the engine) to NMEA 2000®
  • Optional DIN rail mounting kit available
  • Total engine hours are logged by the monitoring of engine Tach (RPM) input

Technical Specifications:

Power Supply

  • Supply Voltage - 9 to 35VDC
  • Supply Current - Typically < 25mA @ 12VDC
  • Supply Protection - Continuous reverse polarity protection and load dump protection (meets SAE J1113)
  • Supply Connector - Pluggable 2-way screw terminal, 3.5mm pitch
  • Supply Voltage (NMEA 2000 Port) - 9 to 29VDC
  • Supply Current (NMEA 2000 Port) - < 20mA @ 12VDC from NMEA 2000 bus
  • Load Equivalent Number (LEN) - 1
  • Supply Protection (NMEA 2000 Port) - Continuous reverse polarity protection and overvoltage protection to 40V

NMEA 2000 Port – In/Out

  • Compatibility - Fully NMEA 2000 certified
  • Galvanic Isolation - 2500V input to ground, 1500V output to ground using ISO-Drive
  • Speed / Baud Rate - 250kbps
  • NMEA 2000 Connector - M12 male (A coded) connector

Gauge Inputs

  • Voltage Range - 0 to 35VDC
  • Input Impedance - > 50kΩ
  • Sender Feed - 0, 4 or 18mA
  • Accuracy - <= 2%
  • Input Connector - Pluggable 6-way screw terminal, 3.5mm pitch
  • Input Protection - Overvoltage protection to ±40V

Alarm Inputs

  • Voltage Range - 0 to 37VDC
  • Input Impedance - > 50kΩ
  • Threshold Voltage - Configurable, default is 5V
  • Alarm Polarity - Configurable, default is alarm on low input
  • Accuracy - <= 2%
  • Input Connector - Pluggable 4-way screw terminal, 3.5mm pitch
  • Input Protection - Overvoltage protection to ±40V

Tacho Inputs

  • Voltage Range - ±3 to ±60V
  • Input Impedance - > 100kΩ to ground
  • Input Pulse Range - 4 to 50,000Hz
  • Accuracy - <= 1%
  • Sender Compatibility - Ignition coil, alternator (“W”, “R” or “AC”) terminal, hall effect, VR or inductive sender
  • Threshold - Automatically adjusts to signal level
  • Input Connector - Pluggable 4-way screw terminal, 3.5mm pitch
  • Input Protection - Can withstand an ignition pulse to ±500V

Engine Log

  • Engine Hours - 2 separate engine hour logs internally connected to the tacho Inputs. Hours are logged when RPM is present, stored in non-volatile memory

Mechanical

  • Housing Material - Polycarbonate
  • Protective Lid Material - Polycarbonate
  • Sealing Materials - Expanded silicone foam gasket, closed cell polyurethane splash guard and ePTFE waterproof vent
  • Dimensions - 127mm (L) x 112mm (W) x 48mm (H)
  • Weight - 250g
  • Mounting - 4 x 3.5mm lugs to allow panel mount with self tapping s/s screws (included), optional DIN Rail mount available on request

Approvals and Certifications

  • EMC - EN 60945 (sections 9 & 10)
  • Environmental Protection - IP66 (PCB housing)
  • Operating Temperature - -20°C to +55°C
  • Storage Temperature - -30°C to +70°C
  • Recommended Humidity - 0 – 93% RH
  • Guarantee - 3 years
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Specifications:

  • Data Interface: NMEA 2000
  • Box Dimensions: 3"H x 6"W x 9"L WT: 1 lbs
  • UPC: 5060998710331

Owner's Manual (pdf)
Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74321130619

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Barbara McCloud
Fort Morgan, US
★★★★★ 5
Nice and strong
Color: Black, Size: Wheel-6 Panel
Nice and strong, tedious, putting together, but very good quality
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Reviewed in the United States on March 17, 2026
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Al Tompkins
Cuba, US
★★★★★ 5
if you are going to be moving them a lot, buy something more sturdy.
Color: Black, Size: Wheel-6 Panel
I use these at our churchc. They are pretty good, not terribly study and the screw that hold the faabric have pulled out in a couple of places. But they wqould work especially well if you were not constantly moving them as we do. They are a bit of a pain to assemble.
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Julie Lincoln
Phoenix, US
★★★★★ 4
Easy to put together , decent quality
Color: Black, Size: Wheel-6 Panel
Purchased for office, easy to put together , durable quality , exactly what we needed to partition a small space
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Reviewed in the United States on November 15, 2025
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Amazon Customer
Charlottesville, US
★★★★★ 5
Nice and sturdy
Color: Grey, Size: Wheel-8 Panel
Good privacy wall
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Reviewed in the United States on May 31, 2026
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Steven J.
Draper, US
★★★★★ 1
Super Low Quality/Unacceptable QC
Color: Black, Size: Wheel-6 Panel
I spent probably about an hour putting it together, only to take it right back apart and pack it up to return. The dimples for half the poles were on the wrong side (double and triple checked to make sure they couldn't be spun around. The threaded ends for the wheels were freely spinning on all but 2 wheels, making it impossible to actually tighten them fully. Once it was all put together, the screens could not be folded up to neatly put it aside when not in use. All in all, this was shamefully low quality for the money spent.
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Reviewed in the United States on July 22, 2024

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