![Actisense PRO NMEA 0183 Buffer - 2 OPTO Inputs, 12 ISO-Drive Outputs, Serial Port, Ethernet Port, Pluggable Screw Terminal [PRO-BUF-2]](https://cdn.shopify.com/s/files/1/0855/3916/0358/files/99820XL.jpg?v=1766097527)
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Description
Actisense PRO NMEA 0183 Buffer - 2 OPTO Inputs, 12 ISO-Drive Outputs, Serial Port, Ethernet Port, Pluggable Screw Terminal [PRO-BUF-2]PRO NMEA 0183 Buffer 2 OPTO Inputs, 12 ISO Drive Outputs, Serial Port, Ethernet Port, Pluggable Screw Terminal Two OPTO isolated inputs and twelve ISO Drive isolated outputs. Offering device protection and excellent flexibility, all in one product the Actisense PRO BUF 2, the intelligent, type approved PRO range buffer. The PRO BUF 2 is rugged, with a stainless steel housing, and provides isolation on all inputs and outputs. With two NMEA 0183 inputs,
PRO NMEA 0183 Buffer - 2 OPTO Inputs, 12 ISO-Drive Outputs, Serial Port, Ethernet Port, Pluggable Screw Terminal
Two OPTO-isolated inputs and twelve ISO-Drive™ isolated outputs. Offering device protection and excellent flexibility, all in one product - the Actisense® PRO-BUF-2, the intelligent, type-approved PRO range buffer.
The PRO-BUF-2 is rugged, with a stainless steel housing, and provides isolation on all inputs and outputs. With two NMEA 0183 inputs, twelve NMEA 0183 outputs, a bi-directional serial port, and an Ethernet port, the PRO-BUF-2 is a perfect solution for larger leisure vessels, commercial shipping, and is a great addition for systems that require type-approved devices.
The PRO-BUF-2 is designed to suit the majority of NMEA 0183 systems and is ready to go ‘out of the box’ by simply hard-wiring the two-mode inputs as required.
The Intelligent NMEA 0183 Buffer's manually configurable basic modes of operation include variations of buffer modes, intelligent auto-switch, and combine modes.
For all other configurations, leaving the mode inputs floating selects the ‘User Configuration Mode’. The web-based configuration tool allows full customisation of the PRO-BUF-2, and is compatible across all popular Operating Systems. Using the web-based configuration tool allows for fine-tuning of the data available on each output.
To make installation quick and simple, the PRO-BUF-2 features 2-part pluggable connectors that allow the use of screw terminals*, and a professional DIN Rail mounting system (DIN Rail not included). The device can also be mounted directly to the bulkhead.
Helpful LEDs indicate power, data in, data out, and the alarm status to aid diagnostics.
Data statistics and load indication via the web tool provide a real-time view of data.
Features:
- 2 Opto-Isolated inputs
- 12 ISO-Drive NMEA 0183 outputs
- Ethernet Port
- Flexible operating modes
- Automatic Baud Rate matching on inputs
- Alarm output options
- Web-based configuration tool
- Diagnostic LEDs
- Advanced Data Filtering and Routing
- 2 virtual Autoswitch modules
- Data statistics and load indication via a web tool
- Designed for a 12 / 24 Volt supply
- Future-proofing with easily upgradable firmware
- 2-part pluggable connector system
- Stainless Steel Housing with DIN rail mount option
- Type Approved
- Flexible configuration options to buffer autoswitch or combine NMEA data
- ISO-Drive separates the Listener from the Talker to protect both the PRO-BUF and each connected device.
- Fast bi-directional data connection to a monitor and control software application
- PRO-BUF can be configured using any web browser on any Operating system
- Works out-of-the-box without configuration for basic installations, or can be easily user-configured as required
- Relay output is compatible with on-board alarm systems, and the NMEA Alarm sentence can be displayed and actioned on an MFD
- Easy to access via network, doesn’t require the device to be moved or have a serial connection to the PC.
- A quick visual check gives the user confidence that each input and output is passing data
- Features can be utilised to fine-tune data, avoiding data overloads on the outputs and connected listeners
- Allows automatic data priority selection between two devices of the same type of data (e.g., GPS)
- Shows the NMEA 0183 on each I/O Port, and how frequently it arrives, great for low-level diagnostics
- Allows use on large vessel 24V DC power supply systems
- Additional features in future firmware revisions are accessed using a simple update process via Actisense Toolkit over Ethernet
- Fast installations and supports both screw and screwless terminal types. Ideal for quick diagnostic swapping
- Increased durability, ease of installation, and high performance
- Can be installed on vessels governed by Class Society Rules
- Type Approved (RINA)
Technical Specifications:
Power Supply
- Input Supply Voltage - 9 to 35 V DC
- Input Supply Current - 325mA max @ 12V DC (all outputs @ full drive into 100 ohm loads)
- Input Protection - Continuous reverse polarity, transient overvoltage, and ESD protection
- Power Indicator - LED, Blue – indicates unit is functioning correctly
- Input Supply Connector - Pluggable 2-way screw terminal, 5.08mm pitch
NMEA 0183 Port – Listener & Talker
- Number of Listener / Input Ports - 2 isolated NMEA 0183 Listeners
- Number of Talker / Output Ports - 12 isolated NMEA 0183 Talkers
- Compatibility - Fully NMEA 0183, RS422 & RS232 compatible. RS-485 Listener compatible
- Speed/baud rate - 4800 to 38400 bps
- Talker Output Voltage Drive - >= 2.2V (differential) into 100 ohm
- Talker Output Current Drive - 20 mA maximum per output
- Talker Output Protection - Short circuit and ESD
- Talker Data Indicator - LED, Orange (Flashes at data rate)
- Listener Input Voltage Tolerance - -15 V to +15 V continuous, -35 V to +35 V short term (< 1 second)
- Listener Input Protection - Current limited, overdrive protection to 40 VDC, and ESD protection
- Listener Data Indicator - LED, Green (Flashes to indicate valid input)
- Connectors - Pluggable 2/3-way screw terminals, 5.08mm pitch
Serial Port
- Compatibility - RS422 & RS232 compatible. RS-485 Listener compatible
- Speed/baud rate - 4800 to 115200 bps
- Output Voltage Drive - >= 2.1V (differential) into 100 ohms
- Output Current Drive - 20 mA max.
- Output Protection - Short circuit and ESD
- Input Voltage Tolerance - -15 V to +15 V continuous, -35 V to +35 V short term (< 1 second)
- Input Protection - Current limited, overdrive protection to 40 VDC, and ESD protection
- Data Indicators - LED’s: Green = Receive, Orange = Transmit
- Connectors - Pluggable 3-way screw terminals, 5.08mm pitch
Ethernet Port
- Host Interface - 10/100BaseT, automatic polarity detection
- Supported Protocols - TCP/IP for configuration and firmware updating, TCP/IP and UDP for NMEA 0183 comms
- Indicators - Green = Link/Activity, Yellow = 100 Mbps
- Connector - RJ45
Isolation
- NMEA 0183 Listener - OPTO-Isolated, Hi-Pot tested to 1000V
- NMEA 0183 Talker - Uses IsoDriveTM, Hi-Pot tested to 1000V
- Serial Port - Uses IsoDriveTM, Hi-Pot tested to 1000V
- Alarm Relay - Hi-Pot tested to 1000V
- Ethernet Port - 2kV for 60s
Mode Inputs
- Input Voltage Range - 0 to 35V DC
- Protection - Transient overvoltage and ESD protection
- Connectors - Pluggable 2-way screw terminals, 5.08mm pitch
Alarm Output
- Contacts - Common, Normally Open and Normally Closed
- Alarm Indicator - LED, Red indicates a valid alarm condition
- Contact Ratings - 35VAC / 50VDC
- Connectors - Pluggable 3-way screw terminals, 5.08mm pitch
Mechanical
- Housing Material - 316 Stainless Steel
- Dimensions - 210mm (W) x 128mm (H) x 27mm (D)
- Weight - 530g
- Mounting - Bulkhead mount or DIN rail mount (DIN kit 1)
Approvals and Certifications
- EMC - IEC 60945:2002-08, DNVGL-CG-0339:2019 & IACS UR E10 Rev7
- Compass Safe Distance - 750mm
- Type Approval Certificate - RINA
- Operating Temperature - -25 to +70°C
- Storage Temperature - -40 to +85°C
- Relative Humidity (RH) - 95% @ 55°C
- Environmental Protection - IP40
- Guarantee - 5 Years
Specifications:
- Data Interface: NMEA 0183
- Box Dimensions: 2"H x 6"W x 10"L WT: 1.5 lbs
- UPC: 5060998710522
Quick Guide (pdf)
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:
- 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
4.5 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Good find
Color: Stainless Steel, Size: Medium Size
Great quality, durable, easy to clean, light. Super easy to use. Love the color, really helps me see if I got it fully clean. Numbers are perfect size and not too dim/bright to read. Mine has lasted around 2 years with weekly use and have had no problems
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Easy to use. Stays sealed. Stays charged.
Size: 12 Combo Travel Size
I had previously bought packing bags in a store — the kind the you had to seal and then roll/squish the air out of one end of the bag. It really took 2 people to remove most of the air. I took them to Mexico, and they were just OK.
I switched to these vacuum bags before our family ski trip. What a great purchase! This set includes multiple sizes, which worked well for both everyday clothes and bulkier cold-weather gear. They also fit well inside different size suitcases. One tip: Fill the bag, seal it shut, squish some air out, but then suck the final air out with the bag already inside your suitcase. You can "massage" the clothes and guide how the bag flattens out for a really efficient use of your suitcase space. The organization you can achieve is really impressive.
The bag material and valve is tough enough to not allow any air leaks. The red "glides" they provide make sure the seal is solid and easy to achieve. And the system is simple enough that I suspect that elementary kids or people with lower dexterity could operate it (my teens certainly had no issues packing themselves).
After returning home, I folded all the bag along their original fold lines, charged up the "sucky thing" (which still held 75% of it's charge after being used at least 20 times), and tucked it all neatly in our travel drawer, ready for our international trip next month.
Great value. High quality. I'd even go so far as to say they're fun to use.
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Reviewed in the United States on February 27, 2026
★★★★★ 5
Travel bags
Size: 12 Combo Travel Size
Perfect packing bags. I’m using them for a trip to Alaska. The pump works easily . I tested them out and the air retention is perfect.? They are not too thick and will not take up space. The material seems like it will hold up without ripping. I will be using them often. They come in different sizes which work perfectly with different items.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
These are a travel must!
Size: 15 Combo Travel Size
We recently took a trip to Japan and South Korea with our 3 kids, and needed to bring all their clothes for 2 weeks, with as few suitcases as possible.
These bags were a life saver!
We were able to fit so much more stuff in our suitcases with these bags. I don’t know how we would have brought everything without them. We would have had to bring at least one, probably two suitcases more.
Easy to use - the vacuum is compact so you can bring it with you, but super powerful and works quickly. Remember to charge it after you use it for when you pack back up. But, you can manually push out the air as well if you’re in a pinch.
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Reviewed in the United States on May 4, 2026
★★★★★ 4
More pros than cons, very convenient, but durability is an issue.
Size: 15 Combo Travel Size
Pros: I think that this is a good product. I've had it for several weeks and travel every week for work. It's a good design and the vacuum pump is ergonomic and reliable, in my experience. Charges relatively quickly at home and I'm not sure how long the charge lasts, because it's convenient with a USB-C port, so I charged whenever the charge got to 3 bars. My experience is that dress shirts maintain the pressing if folded and packed neatly. They're creased, but hang them in the hotel bathroom and the steam from a shower loosens the wrinkles nicely.
Cons: durability. The bags are pretty thin and after 3 or 4 trips the seal in the bag(s) can become compromised. I suspect the leaks are tiny and in the actual bag vs. the seal. With regular use, this was in only two of the fifteen bags. The double zip lock is really durable.
FOR CAMPING: they were great for motorcycle camping, however the durability became an issue. I was camping along a lake and took some care with the bags, but admittedly was a little harder on them than I could have been. I took extra bags just in case, and am glad I did. Three of the 6 bags I took slowly lost the vacuum. If you're using them for camping, pack extras. They're inexpensive enough to continue to buy replacements periodically and you do get a lot.
TIPS: pack the vacuum in the suitcase with the bags. Pack the bags with a complete outfit for each day. The temptation is to pack shirts in one bag, socks/underwear in the other, etc. It's more difficult to repack dirty clothes that way, but if you have each day in its own bag you just use each one for a dirty laundry bag.
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Reviewed in the United States on May 19, 2026
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