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Description
DTECH DT-5019 USB To RS485/422 Industrial Converter Serial Line Communication Adapter, DT-5019 1.2m1. Compatible standards: The interface is compatible with EIA TIA RS 485 and RS 422 standards 2. Material: ABS 3. Wire structure: 24WG wire, 80 braided tinned copper braid + aluminum foil double shielding + four tensile rope + 7 cores + 8mm thick wire body, fully shielded environment 4. Chip: FTDI FT232RL+sp485 dual chip 5. Working mode: asynchronous half duplex communication, asynchronous full duplex communication 6. USB signal: VCC, DATA+, DATA ,
1. Compatible standards: The interface is compatible with EIA/TIA RS-485 and RS-422 standards
2. Material: ABS
3. Wire structure: 24WG wire, 80 braided tinned copper braid + aluminum foil double shielding + four tensile rope + 7 cores + 8mm thick wire body, fully shielded environment
4. Chip: FTDI-FT232RL+sp485 dual chip
5. Working mode: asynchronous half-duplex communication, asynchronous full-duplex communication
6. USB signal: VCC, DATA+, DATA-, GND
7. RS-485/RS-422/DB9 pin signal: T/R+, T/R-, GND
8. Signal indication: red light for power supply, green light for sending signal, yellow light for receiving signal
9. Communication rate: 300bps-460800bps, automatic detection of serial port signal rate
10. Communication distance: about 0-5 meters at the USB end; about 0-1200 meters at the RS-485/RS-422 end
11. Number of connectable nodes: support RS-485/RS-422 terminal 32 nodes
12. Communication mode: RS-485 point-to-point half-duplex communication, RS-485 point-to-multipoint half-duplex communication, RS-422 point-to-point full-duplex communication, RS-422 point-to-multipoint full-duplex communication
13. Protection level: about 15kV IEC1000-4-2 Air Discharge
14. Lightning protection and surge protection: 600W lightning surge protection
15. Wiring method: terminal equipment can be connected by twisted pair or shielded wire
16. Transmission medium: twisted pair or shielded wire
17. Support system: Windows10/8/8.1/7, Server 2008, XP, Vista, Mac OS8/9, OS-X, Linux2.4 and other systems
18. Power supply mode: USB power supply
19. Voltage range: 5V
20. Working current: less than 300mA
21. Application scenarios: industrial automation control system, access control system, power control system, parking lot system, attendance machine, industrial computer, PLC controller, etc.
22. Length: about 1.2m
Features:
1. Built-in FTDI-FT232RL+SP485 dual-chip, high-speed logic processing chip, TVS insurance diode, support RS485/422 protocol equipment long-distance transmission, stable and durable
2. 32 RS485/422 devices can be connected, the data communication baud rate range is about 300bps-460800bps
3. Wide range of applications, suitable for connection between computers and various RS485/422 devices, two-way interactive data transmission
4. Automatically control the direction of data flow through the I/O circuit, and automatically determine and control the direction of data transmission
5. Built-in zero-delay automatic transceiver conversion, automatic detection of serial port signal rate
6. Multi-system compatibility, support Windows10/8/8.1/7, Server 2008, XP, Vista, Mac OS8/9, OS-X, Linux2.4 and other systems
7. Safety lightning protection, surge protection
8. Built-in 3 kinds of data indicators, easy to check the working status
9. Use 24WG thick 80 braided tinned copper core, tightly shielded inside and outside, to strengthen anti-electromagnetic interference
Specification:
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4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Great new 1920's British Mystery Series
Format: Kindle
This is a 1920’s British mystery along the lines of Agatha Christie’s classic novels. It is the first book in the series and features a mystery writer – Marius Quin. The book begins with Quin having successfully published his first novel, but having problems meeting his publisher’s demand for a second. Depressed when he leaves his publisher’s office, he accidentally meets an old love of his, Bella, a woman he had wanted to marry ten years before but, because he was leaving to fight in WWI, he didn’t propose. It is Bella who invites him to a New Year’s Eve weekend party at Everham Hall, home of a famous film actor. During the weekend, one of their party is killed and so begins the hunt for the murderer, with Marius and Bella investigating. There are plot twists and turns until the denouement when the killer is revealed. I really like both of the main characters (Marius Quin and Bella), and I’m a fan of that time period and of country manor mysteries. I’ve enjoyed Benedict Brown's Lord Edgington novels and find this new series equally appealing.
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Reviewed in the United States on November 5, 2023
★★★★★ 3
New Year, new beginnings, new murder
Format: Kindle
Having run through the entire Lord Edgington Investigates series, it felt natural to jump over to this Marius Quin mystery. All in all, it’s not quite as funny as the banter between Lord Edgington and Christopher affords, but it’s still highly readable and offers the same weaving of clues to keep you entertained.
What’s in store for you? Put together looming bills, writer’s block, a past lover, a New Year’s Eve party, a dead silent film star, a killer on the loose in a snowbound manor, and 6 perfectly good suspects—except they all seem so innocent if unlikeable (some more than others, one more than most)—which means Marius has his work cut out for him. So do you if you’re an armchair detective.
So why 3 stars and not higher? I’m suffering from comparison syndrome. Marius and Bella don’t have a big enough gap between them (other than an historical romantic mishap) for belly-laugh comedic moments like Lord Edgington and grandson Christopher have. That won’t stop me from reading the next installment in the series, though, so I can let Marius and Bella grow on me as the author finds their rhythm.
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Reviewed in the United States on May 25, 2025
★★★★★ 5
Grown up version of Chrissy!
Format: Kindle
Marius Quin is a good character for Benedict Brown’s readers. There is a tie-in with Lord Edgington (and Chrissy) and Lord Edgington is referred to or almost mentioned a few times. This takes place in a huge old mansion with some history, that has to do with the murder, so I don’t want to spoil it. Marius does have a dog, but he’s not as involved with the story as Lord Edgington’s Golden Retriever, unless you think of his ability to judge characters.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
A quite enjoyable, funny, mystery.
Format: Kindle
I really enjoyed this one, it was funny, great characters, fantastic pacing, solid twist at the end, although one thing was obvious to me but I can't say it because thats a spoiler. But I am really looking forward to the next book.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Good first book in a series.
Format: Paperback
I had read all of the Lord Edgington mysteries and decided to try this series since I believe the author does a very good job. Definitely a different vibe than the other series, but great all the same. I THOUGHT that I had for once solved the mystery before the end but I was only partially right. Definitely recommend; I will be purchasing all the other books in this series.
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Reviewed in the United States on May 5, 2026