Actisense PRO-BUF-2 NMEA Buffer: 2 Opto Inputs, 12 ISO-Drive Outputs

The Actisense PRO-BUF-2 is a rugged, intelligent NMEA 0183 buffer designed for serious marine networks. Built to endure the harsh environment of large vessels and commercial ships, it combines two opto-isolated inputs with twelve ISO-Drive isolated outputs, giving you clean, protected data distribution across your navigation and bridge systems.

Key features that set PRO-BUF-2 apart

• Two OPTO-isolated NMEA 0183 inputs and twelve ISO-Drive isolated outputs for robust, interference-free data handling.
• Bi-directional serial port and Ethernet port enable flexible network integration, massaging NMEA data where you need it most.
• Stainless steel housing with full isolation on all inputs and outputs, delivering dependable performance in engine rooms, galleys, and exposed deck spaces.
• Pluggable screw terminals for fast, field-friendly wiring and easy servicing without special tools.
• Standard, ready-to-wire configuration that supports the majority of NMEA 0183 installations out of the box.
• Type-approved PRO Range device designed to meet marine industry standards and provide proven reliability on larger vessels and commercial applications.

Why you need a dedicated buffer on your NMEA network

NMEA 0183 networks often suffer from ground loops, EMI, and component mismatch as the system grows. The PRO-BUF-2 preserves data integrity by isolating every input and output, protecting critical sensors, displays, and controllers from electrical noise and voltage transients. This means more reliable navigation information, smoother radar and sonar integration, and safer, more predictable autopilot behavior on long passages or busy ports.

Real-world use cases

• Distribute GPS, AIS, and radar data across multiple displays and controllers without sacrificing signal quality.
• Connect legacy NMEA devices with modern network equipment via the Ethernet port, bridging old and new gear.
• Protect sensitive electronics in power-dense engine rooms by isolating signal paths from power noise and surges.
• Configure two-mode inputs to fit specific installation needs, then hard-wire for quick, reliable deployment.
• Ideal for large leisure vessels and commercial fleets that require a durable, certified data buffer with high channel density.

Who benefits most

• Maritime professionals managing complex bridge networks and multiple NMEA devices.
• Boat owners upgrading older systems who need safe, scalable data distribution.
• Systems integrators seeking a rugged, maintainable buffer that aligns with marine electronics standards.

How PRO-BUF-2 compares in practical terms

Where simple routing or non-isolated buffers fall short, the PRO-BUF-2 provides true isolation on every input and output, a durable stainless steel build, and purposeful connectivity through its serial and Ethernet ports. This combination reduces troubleshooting time, simplifies installations on larger vessels, and delivers consistent performance across demanding marine environments.

Specifications at a glance

• Inputs: 2 x NMEA 0183 OPTO-isolated
• Outputs: 12 x NMEA 0183 ISO-Drive isolated
• Serial port: Bi-directional
• Network: Ethernet
• Configuration: Standard (ready to wire)
• Terminals: Pluggable screw terminals
• Housing: Stainless steel
• Certification: Type-approved PRO Range

What you get and how to install

Designed for straightforward integration, the PRO-BUF-2 comes in a plug-and-play configuration suitable for most NMEA 0183 systems. Installers can simply wire the two input modes as required and use the pluggable screw terminals for reliable connections. The rugged enclosure and complete isolation mean it’s ready to endure demanding marine conditions from day one.

Trusted by marine professionals

From small coastal workboats to large offshore vessels, Actisense brings decades of marine data experience to the PRO-BUF-2. Its intelligent design, type approval, and resilient construction deliver predictable performance when every bit of data matters for safety and navigation.