Big Spring Sale
To see product details, add this item to your cart. You can always remove it later.
Ships from
鶹
鶹
Ships from
鶹
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your wish lists. Please try again.

Sorry, there was a problem.

List unavailable.
  • Waveshare Industrial USB to RS485 Bidirectional Converter Type B Onboard Original CH343G Multi-Protection Circuits Fast Communication

Waveshare Industrial USB to RS485 Bidirectional Converter Type B Onboard Original CH343G Multi-Protection Circuits Fast Communication

4.6 out of 5 stars (103)
To see product details, add this item to your cart. You can always remove it later.

Purchase options and add-ons

About this item

  • Provide online user manual, please check the manual carefully before using.
  • Support USB to RS485 bidirectional conversion. Fast communication, stable and reliable, better compatibility.
  • Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, llgthningproof & anti-electrostatic.
  • Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance.
  • Onboard 3 LEDs for indicating the power and transceiver status.
› See more product details

Customers usually keep this item

This product has fewer returns than average compared to similar products.

Frequently bought together

This item: Waveshare Industrial USB to RS485 Bidirectional Converter Type B Onboard Original CH343G Multi-Protection Circuits Fast Communication
$17.99
Get it by Tuesday, Mar 24
In Stock
Sold by waveshare and ships from 鶹 Fulfillment.
+
Waveshare Industrial USB to RS485 Converter with Original FT232RL and SP485EEN Embedded Protection Circuits for Industrial Co
$22.99
Get it by Tuesday, Mar 24
In Stock
Sold by waveshare and ships from 鶹 Fulfillment.
+
Waveshare USB to CAN Adapter Model A, Supports Multiple Working Modes, Multi-System Compatible
$37.75
Get it by Tuesday, Mar 24
In Stock
Sold by waveshare and ships from 鶹 Fulfillment.
Total price:$00
To see our price, add these items to your cart.
Details
Added to Cart
Choose items to buy together.

Product Description

Selection Table

USB TO RS485 (B)

USB TO RS485

USB TO RS232-485

USB TO RS485/422

USB TO RS232/485 (B)

USB TO RS232/485/TTL (B)

USB TO 4CH RS485 (B)

Customer Reviews
4.6 out of 5 stars 103
4.6 out of 5 stars 366
4.7 out of 5 stars 128
4.8 out of 5 stars 28
4.7 out of 5 stars 9
4.3 out of 5 stars 10
4.4 out of 5 stars 11
Chip Model
CH343G FT232RNL FT232RNL FT232RNL FT232RNL CH343G CH344L
Host Port
USB USB USB USB-B USB-B USB-B USB-B
Device Port
RS485 RS485 RS232/485 RS485/422 RS232/485 RS232/485/TTL Isolation type RS485
Bauda rate
300bps ~ 3Mbps 300bps ~ 921600bps 300bps ~ 921600bps 300bps ~ 3Mbps 300bps ~ 921600bps 600000 bps(MAX) 1200bps ~ 460800bps
Led Indicators
PWR/TXD/RXD PWR/TXD/RXD PWR/TXD/RXD PWR/TXD/RXD PWR/TXD/RXD PWR/TXD/RXD PWR/ACT/RXD/TXD
Temperature Range
-15℃ ~ 70℃ -15℃ ~ 70℃ -15℃ ~ 70℃ -15℃ ~ 70℃ -15℃ ~ 70℃ -15℃ ~ 70℃ -40 ~ 85℃
Operating System
Mac, Linux, Android, Windows Mac, Linux, Android, Windows Mac, Linux, Android, Windows Mac, Linux, Android, Windows Mac, Linux, Android, Windows Mac, Linux, Android, Windows Mac, Linux, Android, Windows
Transmission Distance
：5；R485：1200（M） ：5；R485：1200（M） ：5；R232:15;鳧485：1200；M USB:5M;RS485/232:1200M;(MAX) ：5；R232:15;鳧485：1200；M — ：5；R485：1200（M）
USB TO RS485 (B)
USB TO RS485 (B)
USB TO RS485 (B)
USB TO RS485 (B)
USB TO RS485 (B)
USB TO RS485 (B)

Product details

  • Parcel Dimensions ‏ : ‎ 11.7 x 6.8 x 3.6 cm; 80 g
  • Manufacturer ‏ : ‎ Waveshare
  • ASIN ‏ : ‎ B0B879M2KT
  • Item model number ‏ : ‎ USB TO RS485 (B)
  • Country/Region of origin ‏ : ‎ China
  • Customer Reviews:
    4.6 out of 5 stars (103)

Product information

Feedback

Waveshare Industrial USB to RS485 Bidirectional Converter Type B Onboard Original CH343G Multi-Protection Circuits Fast Communication

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

Brands in this category on 鶹

Sponsored

Customer reviews

4.6 out of 5 stars
103 global ratings

Customers say

Customers find the electronic adapter works perfectly without issues and functions straight out of the box. The adapter connects inverter to Solar Assistant and is compatible with Solar Assistant systems. Users appreciate that it requires no manual driver configuration and operates as a plug and play item.
AI Generated from the text of customer reviews

Select to learn more

16 customers mention functionality, 14 positive, 2 negative
Customers report that the electronic adapter works perfectly without issue and functions straight out of the box. The device works well for BACnet Communications and detects directly on Windows 10 without any problems.
Made a commercial washer programing cable out of it. Works great.Read more
Works very well.Read more
Works great! No issues at all....Read more
9 customers mention solar updates, 7 positive, 2 negative
Customers find the electronic adapter works well with Solar Assistant systems. They report it connects to inverters and provides real-time solar updates from their systems. The adapter is compatible with Solar Assistant and helps with connecting to home inverters for control. Users describe it as great for Solar Assistant applications.
6 customers mention installation, 6 positive, 0 negative
The electronic adapter is a plug and play item that requires no manual driver configuration or drivers on Windows 11.
Plugged it into my laptop and it automatically installed the drivers....Read more
Works great! No issues at all.
5 out of 5 stars
Works great! No issues at all.
Plugged it into my laptop and it automatically installed the drivers. Connected to modbus poll software and quickly was able to bring back modbus RS485 serial comms. Was able to successfully test wiring to the device and verify it works.
Hide
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from Canada

  • Leonid Nasyedkin
    5.0 out of 5 stars Waveshare industrial USB to RS485 Biderectional Converter TypeB
    Reviewed in Canada on January 28, 2026
    Verified Purchase
    Works very well.
    Helpful
     Report
  • Christopher Hackett
    5.0 out of 5 stars Works great! No issues at all.
    Reviewed in Canada on April 30, 2024
    Verified Purchase
    Plugged it into my laptop and it automatically installed the drivers. Connected to modbus poll software and quickly was able to bring back modbus RS485 serial comms.
    Was able to successfully test wiring to the device and verify it works.
    Customer image
    Christopher Hackett
    5.0 out of 5 stars
    Works great! No issues at all.

    Reviewed in Canada on April 30, 2024
    Plugged it into my laptop and it automatically installed the drivers. Connected to modbus poll software and quickly was able to bring back modbus RS485 serial comms.
    Was able to successfully test wiring to the device and verify it works.
    Images in this review
    Customer image
    One person found this helpful
    Helpful
     Report
  • JariL
    5.0 out of 5 stars Works great
    Reviewed in Canada on November 2, 2024
    Verified Purchase
    Made a commercial washer programing cable out of it. Works great.
    Helpful
     Report
  • Paul S
    5.0 out of 5 stars Excellent device
    Reviewed in Canada on July 6, 2024
    鶹 Vine Customer Review of Free Product( What's this? )
    I am using this device in conjunction with an environmental monitor with a RS485 port in order to to automate the dehumidification of a room filled with boxes. Anytime the humidity goes above 55% the machine turns on.

    The device has excellent safety features and good multi function capability for communications between devices.

    Recommended
    Customer image
    Paul S
    5.0 out of 5 stars
    Excellent device

    Reviewed in Canada on July 6, 2024
    I am using this device in conjunction with an environmental monitor with a RS485 port in order to to automate the dehumidification of a room filled with boxes. Anytime the humidity goes above 55% the machine turns on.

    The device has excellent safety features and good multi function capability for communications between devices.

    Recommended
    Images in this review
    Customer image Customer image Customer image
    2 people found this helpful
    Helpful
     Report
  • Traveller
    5.0 out of 5 stars Robust RS-485 Solution
    Reviewed in Canada on June 10, 2024
    鶹 Vine Customer Review of Free Product( What's this? )
    The Waveshare Industrial USB to RS485 Bidirectional Converter is perfect for a long distance serial connection to your Arduino project or for use with existing RS485 equipment.

    Windows 11 recognizes the device and has the driver available.

    Transient suppression is absolutely necessary for long serial cables.

    Fine build at a reasonable price.
    Helpful
     Report

Top reviews from other countries

Translate all reviews to English
  • Shevchenko Yevhen
    5.0 out of 5 stars C'est tout bon
    Reviewed in France on November 15, 2025
    Verified Purchase
    C'est tout bon
    Report
  • Donald Bishop
    5.0 out of 5 stars Works well for BACnet Communications.
    Reviewed in the United States on July 16, 2024
    Verified Purchase
    Seamless connection to Windows 11. Worked great for BACnet communication from my PC.
    Report
  • Yeremy Contreras
    5.0 out of 5 stars Buen producto
    Reviewed in Spain on March 9, 2026
    Verified Purchase
    Excelente producto
    Report
  • Dagmar van Dusschoten
    5.0 out of 5 stars Stevige goede usb naar rs485
    Reviewed in the Netherlands on February 17, 2026
    Verified Purchase
    Werkt goed. Lekker stevig.
    Report
  • Domenico
    5.0 out of 5 stars Usato per test modbus e funziona benissimo
    Reviewed in Italy on August 11, 2025
    Verified Purchase
    Ottimo
    Report
See more reviews

Brand in this category on 鶹

Sponsored

Product Summary: Waveshare Industrial USB to RS485 Bidirectional Converter Type B Onboard Original CH343G Multi-Protection Circuits Fast Communication

From Waveshare

4.6 out of 5 stars, 103 ratings

Customer reviews

Price

No featured offers available

Other sellers

Other sellers

About this Item

  • Provide online user manual, please check the manual carefully before using.
  • Support USB to RS485 bidirectional conversion. Fast communication, stable and reliable, better compatibility.
  • Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, llgthningproof & anti-electrostatic.
  • Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance.
  • Onboard 3 LEDs for indicating the power and transceiver status.
Report an issue with this product or seller

Feedback

Did you find this product summary feature useful?

Thank you for your feedback
Thank you for your feedback. You selected “Yes, it is useful”
Thank you for your feedback. You selected “No, it is not useful”
Product summary presents key information. Close to see all product details.