USB to RS485 Converter with CH343G, Bidirectional Adapter


1 in stock



1 in stock

Industrial quality USB to RS485 bidirectional interface converter. It features embedded protection circuits such as lightning-proof, resettable fuse, ESD protection, and TVS diode, etc. 

Waveshare SKU: 22456
Waveshare Part Number: USB TO RS485 (B)

Assembled with original CH343G and SP485EEN chips. Due to its stable communication, it is an ideal choice for industrial control equipment and/or applications with high communication requirement. 

For more information have a look at the Waveshare Wiki page.Waveshare Wiki page:


  • 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, lightningproof & anti-electrostatic
  • Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
  • 3 LEDs for indicating the power and transceiver status


  • Industrial Grade USB to RS485 converter
  • Host port: USB
  • Device port: RS485
  • Baudrate: 300bps ~ 3Mbps
  • USB
    • Operating voltage 5V
    • Connector USB-A
    • Protection 200mA self-recovery fuse, ESD protection
    • Transmission distance About 5m
  • RS485
    • Connector Screw terminal
    • Pins A+, B-, GND
    • Direction control Hardware automatic control
    • Protection 600W lightningproof and surge-suppress, 15KV ESD protection (onboard 120R balancing resistor)
    • Transmission distance About 1.2km(low rate)
    • Transmission mode Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
  • LED indicators
    • PWR Red power indicator, light up when there is USB connection and voltage is detected
    • TXD Red TX indicator, light up when the USB port sends data
    • RXD Red RX indicator, light up when the device ports send data back
  • Operating environment
    • Temperature -15℃ ~ 70℃
    • Humidity 5%RH ~ 95%RH
  • Operating system: Mac, Linux, Android, WinCE, Windows 11 / 10 / 8.1 / 8 / 7

Package Includes

1 x USB to RS485 Interface Converter
1 x USB-A male to female cable
1 x Screwdriver

[mx_insert-post-ebay slug="ebay-t-default"]
SKU: USB0-001 Category: Tags: ,
Weight80 g

Wired Technology