Do i have to use the 232 port ot does the usb connection map as a com port?

You do not have to use the RS232 port, I use one of these to work RS485 over a BacNet MS/TP network to find my devices. The USB does setup as a com port and is powered from the USB port, the device works flawlessly for what I need it for. For the price, it is well worth it as I use many protocols over the RS485 for device discovery. I am currently looking for a WiFi version of this or a type like this, I work building automation and devices like this make my job much easier.

What type is product, echo or non-echo ? the echo is the reflection of transmitting data on the receiving line.

Dear cuetomer, it's non-echo, if there is any other question for our products, please feel free to contact us. Thank you.

Does this work with the modbus protocol?

Yes, it will work for whatever RS232/RS485/RS422 protocol you decide to use.

Can i convert from rs232 to ttl?

Hi, Sorry,it can't convert from rs232 to ttl. It can only support USB TO RS232, USB TO RS485, USB TO TTL (UART), not support RS232 to TTL. And it can't support USB to convert to RS232, RS485 and TTL at the same time. And RS232, RS485 and TTL cannot be converted mutually. It only support USB to RS232, RS485 or TTL.

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Waveshare USB to RS232/485/TTL Interface Converter Power and ADI magnetical Industrial Isolation

Waveshare USB to RS232/485/TTL Interface Converter Power and ADI magnetical Industrial Isolation

Product ID: 292203999

Details

Brand
Waveshare
Colour
USB TO
Compatible devices
Devices with
Connector type
USB Type B
Specific uses for product
Serial Systems

⚡Fast FT232RL chipset

🔧Multi-interface RS232/485/TTL support

🛡️Industrial-grade isolation & surge protection

RM337

Duties & taxes included

In stock

Sold byAmazon MalaysiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Power your industrial edge with seamless, surge-proof serial connectivity!

RUGGED ELEGANCE - Durable CNC-machined aluminum alloy enclosure with LED indicators—engineered to withstand harsh industrial environments while looking sleek on your desk.
PLUG PLAY VERSATILITY - Seamlessly switch between RS232, RS485, and TTL interfaces with automatic transceiver circuits and configurable voltage levels.
BLAZING FAST ROCK SOLID - Original FT232RL chipset ensures ultra-stable, lag-free communication for mission-critical tasks.
BUILT IN INDUSTRIAL ISOLATION - Magnetical and power supply insulation shields your data from interference and voltage spikes—no extra power needed.
SURGE PROOF SHOCK RESISTANT - Onboard TVS diodes and self-recovery fuses protect against lightning strikes and electrical surges, keeping your setup safe.

The Waveshare USB to RS232/485/TTL Interface Converter features the original FT232RL chipset for fast, stable communication across multiple serial protocols. Its industrial-grade magnetical and power supply isolation, combined with TVS diode surge protection and self-recovery fuses, ensures robust, interference-free operation without extra power sources. Housed in a CNC-machined aluminum alloy case with LED status indicators, this converter is designed for demanding industrial automation, embedded systems, and data acquisition applications.

Specifications

ASIN	B07L2VLY5D
Best Sellers Rank	#66,274 in Computers ( See Top 100 in Computers ) #166 in Serial Adapters
Brand	Waveshare
Color	USB TO RS232/485/TTL
Colour	USB TO RS232/485/TTL
Compatible Devices	Devices with RS232, RS485, or TTL interfaces
Compatible devices	Devices with RS232, RS485, or TTL interfaces
Connector Type	USB
Connector type	USB
Customer Reviews	4.7 out of 5 stars 284 Reviews
Finish	Metallic
Finish type	Metallic
Input Voltage	5 Volts
Item Weight	50 Grams
Manufacturer	Waveshare
Mfr Part Number	USB TO RS232/485/TTL
Model Number	USB TO RS232/485/TTL
Number of Items	1
Number of Ports	2
Package Quantity	1
Power Plug Type	No Plug
Specific Uses For Product	Serial Communication, Industrial Automation, Embedded Systems, Data Acquisition, Robotics
Specific uses for product	Serial Communication, Industrial Automation, Embedded Systems, Data Acquisition, Robotics
UPC	778365986580 614961953574
Unit Count	1 Count

Reviews

B**H

Doet wat het moet doen

Werkt perfect. De TTL keuze tussen 5 en 3,3 Volt is handig.

26.12.2025

E**C

Parfait et solide

Parfait! Je l'ai utilisé pour investiguer sur des trames modus rs485. Solide et fonctionne à chaque fois!

10.07.2021

N**N

Excellent

Excellent, works well.

26.08.2026

C**!

Worked out of the box on Windows 10

I ordered this because my previous usb to "rs232" cable didn't actually have true rs-232 voltage levels, I needed it in order to program a curtis golf-cart motor controller... As soon as I plugged in this Waveshare box, worked instantly! Windows 10 found the driver on it's own, and within mere minutes of unboxing; I was in business programming a motor controller for a local guy who had a broken down mobility scooter. The box housing seems really high quality I feel, and its heavy too which I like about it. A+ Waveshare!

4.06.2024

A**R

Fungerade perfekt!

Inga drivrutiner behövdes installeras i Win 10 & 11. Stabil funktion på RS485. Kvalitetskänska.

18.11.2022

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TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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