![Actisense PRO NMEA 0183 Multiplexer [PRO-MUX-2]](https://cdn.shopify.com/s/files/1/0855/3916/0358/files/106690XL.jpg?v=1766098243)
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Description
Actisense PRO NMEA 0183 Multiplexer [PRO-MUX-2]PRO NMEA 0183 Multiplexer Eight OPTO isolated inputs and six ISO Driveisolated outputs. Offering device protection and excellent flexibility, all in one product. Introducing the Actisense PRO MUX 2, the intelligent, type approved PRO range multiplexer. The PRO MUX 2 is rugged, with a stainless steel housing, and provides isolation on all inputs and outputs. With eight NMEA 0183 inputs, six NMEA 0183 outputs, a bi directional serial port and an
PRO NMEA 0183 Multiplexer
Eight OPTO-isolated inputs and six ISO-Drive™isolated outputs. Offering device protection and excellent flexibility, all in one product.
Introducing the Actisense® PRO-MUX-2, the intelligent, type-approved PRO range multiplexer.
The PRO-MUX-2 is rugged, with a stainless steel housing, and provides isolation on all inputs and outputs. With eight NMEA 0183 inputs, six NMEA 0183 outputs, a bi-directional serial port and an Ethernet port, the PRO-MUX-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-MUX-2 is designed to suit the majority of NMEA 0183 systems, from leisure through to class vessels.
Features:
- 8 OPTO-isolated NMEA 0183 inputs
- 6 ISO-Drive NMEA 0183 outputs
- Bi-directional isolated serial port (can be used for additional NMEA 0183 input/ output)
- 0183 streaming via Ethernet
- Alarm output (N/O and N/C contacts)
- Designed for 12- and 24-Volt supply
- Isolation to battery supply
- Configurable input and output baud rates for rate conversion
- Data combining from any input to any output
- 2 independent Autoswitch virtual inputs with priority
- Advanced sentence-based filtering / routing
- Diagnostic LEDs on all inputs and outputs
- Alarm, mode and Bi-colour Status LED’s
- 2-part pluggable connector system supports both screw and screwless terminals
- DIN rail or Panel mountable
- Advanced statistics are available via a Web Browser
- Quick and easy to install
- Configuration using standard web browser, no PC operating system compatibility issues
- Advanced features solve NMEA 0183 data routing problems
- Fully isolated with ISO-Drive technology for peace of mind
- Easy firmware updates makes the device future-proof
Technical Specifications:
Power Supply
- Input Supply Voltage - 9 to 35 V DC
- Input Supply Current - 220mA 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 (12 to 30 AWG)
NMEA 0183 Port – Listener & Talker
- Number of Listener / Input Ports - 8 isolated NMEA 0183 Listeners
- Number of Talker / Output Ports - 6 isolated NMEA 0183 Talkers
- Compatibility - Fully NMEA 0183, RS422 & RS232 compatible. RS485 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 (12 to 30 AWG)
Serial Port
- Compatibility - RS422 & RS232 compatible. RS485 Listener compatible
- Speed / baud rate - 4800 to 115200 bps
- Output Voltage Drive - >= 2.1V (differential) into 100 ohm
- 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 (12 to 30 AWG)
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 IsoDrive™, Hi-Pot tested to 1000V
- Serial Port - Uses IsoDrive™, 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 (12 to 30 AWG)
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 (12 to 30 AWG)
Mechanical
- Housing Material - 316 Stainless Steel
- Dimensions - 210mm (W) x 128mm (H) x 27mm (D)
- Weight - 540g
- Mounting - Bulkhead mount or DIN rail mount (DIN kit 1)
Approvals and Certifications
- Compass Safe Distance - 175mm
- 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: 5060998710584
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
4.7 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Beautiful story
Format: Kindle
Loved this book and the way it was written. Written words are a beautiful thing. Highly recommend this book to all
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 4
Heartwarming & real!
Format: Kindle
Life can be so difficult ...this story is about learning that we all make mistakes
along the way, doing the best we can. Its about learning to forgive ourselves. Beautiful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
many feelings
Format: Kindle
I didn’t know what this book was about when I first started reading.. one thing I felt at the beginning was…amazement? I love writing letters, something I don’t do often, I recently bought this beautiful fountain pen, I wanted to start small, writing greeting cards to family and friends, birthday cards, thank yous, etc. what I didn’t expect is the emotional toll this book had on me, and other members of my family who read the book for our book club. The subject matters, death of a child, husband dying of cancer, the significance of May 29th, all impacted our family, and so, as I read this book, I had to put it down several times because I had to cry, compose myself, think of regrets I have, and remember.
How amazing it is that Sybil was able to write all about the death of her child to her dead child. I always say that writing it down on paper releases your burden in your head…it is true, I think writing letters, even the ones she didn’t send helped her quiet her head, at least for a while. I truly love this book. I have been borrowing books from Libby to read for our book club for a very long time, there have been books that I fell in love with, and always thought if I want to read them again I’ll just borrow them again, this book is the first one that I want to own physically to put on my shelf and know that I have it to read over and over again when I want to reflect and then quiet my head. ( This is the longest review I’ve written about a book I’ve read, I hope it makes sense).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Successful Epistolary Novel
Format: Kindle
When we first meet Sybil Van Antwerp, age 73, she is retired from law and spends a lot of time writing letters and emails. She also reads a lot and is interested in what her correspondents are reading. She has children and grandchildren, but she lives alone in Annapolis, Maryland, and doesn’t see her family very often. During the course of reading her correspondence, we very gradually learn about Sybil—her history and her present troubles. She is a complicated character and several times in reading The Correspondent I paused to ask myself what I thought of Sybil—did I like her? What about her kept me from the immediate response a reader usually has about the main character of a book? Even at the end of the book, I am still ambivalent about Sybil, but I certainly understand her much better.
Sybil, herself, and the book have so many layers. There is true depth to the story. My book club took deep dives into it over a period of three weeks, and I don’t think we have sampled all the topics represented in this book. It is a wonderful novel for stimulating meaningful discussion.
Neurodivergence is not called out or named, but it comes to mind in thinking about Harry, a child who is the son of a judge, a former colleague of Sybil. The boy doesn’t quite fit in socially with his peers, but he is brilliant. Sybil makes the perfect “pen pal” for Harry because they have some of the same characteristics. As a child she was punished for “insolence and rudeness,” but her parents were just trying to mold her into a polite young lady as expected by society. She was blunt and didn’t have many friends.
There are so many other issues worthy of discussion, but they would most certainly bring up spoilers. I won’t do that to you. Readers should have the opportunity to see the story gradually emerge from the letters, including a continuing one that the reader doesn’t know to whom Sybil is writing. Sybil sets the word “stone” for secrets, and there are stones in this book making it a puzzle, a mystery of sorts—for the reader.
As a reviewer, I tend to go quickly from one book to the next as soon as I have composed and published my thoughts. Characters in various books can even blend together. This is not the case with The Correspondent. The characters in this book, especially Sybil, have stayed with me and come to mind frequently as I go through my day. Virginia Evans has created a fictional world with impact. Just as Sybil needed time (years in her case) to process the events of her life, the reader will need time to process them and their effects on Sybil as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
★★★★★ 5
Loving it so far
Format: Paperback, Format: Paperback
I really didn't know what to expect with a book full of names, but I love a murder mystery & needed more post work hobbies, so I thought this would be interesting & was I right. This book has been so engaging and keeps my mind in a good focused place instead of the usual dissociation after a stressful day of work or doom scrolling. It was nice to come up with my own little system as to how I would solve the clues on each page & keep track of everything. If you're interested in puzzles, or just need something interesting to keep busy, I feel this is a great concept to solve a mystery. 100% would recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
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