Waveshare Industrial USB TO RS485 Bidirectional Converter, Onboard original CH343G, Multi-Protection Circuits


  1. Brand: Waveshare
  2. Product: Industrial USB TO RS485 Bidirectional Converter
  3. Device Port: RS485
  4. Baud Rate: 300bps ~ 3Mbps
  5. Operating voltage: 5V
  6. Connector: USB-A

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SKU: RK009125 Categories: ,


Industrial USB TO RS485 Bidirectional Converter, Onboard Original CH343G, Multi-Protection Circuits And SP485EEN Chips, Providing Better Stability And Compatibility, Built-In Lightningproof Tube, Resettable Fuse, ESD And TVS Protection Circuits, Etc.The USB Signal Can Be Converted Into A Balanced Differential RS485 Signal And The Transmission Rate Is Stable. The Reliable Speed Is 300bps ~ 3Mbps, The Transmission Distance Is About 1.2km For RS485 And About 5 Meters For USB.CH343G is a USB bus adapter chip, which can convert USB to a high-speed asynchronous serial port, supports automatic identification and dynamic self-adaptation of communication baud rate of 115200bps and below, and provides commonly-used MODEM contact signals to expand asynchronous serial ports for computers. It can upgrade a common serial device or MCU directly to a USB bus.


  1. Support USB to RS485 bidirectional conversion
  2. Fast communication, stable and reliable, better compatibility
  3. Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning proof & anti-electrostatic
  4. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
  5. 3 LEDs for indicating the power and transceiver status


  1. Host Port: USB
  2. Device Port: RS485
  3. Baud Rate: 300bps ~ 3Mbps
  4. Operating voltage: 5V
  5. Connector: USB-A
  6. Transmission distance: 5m
  7. Protection: 200mA self-recovery fuse, ESD protection
  8. Pins: A+, B-, GND
  9. Humidity 5%RH ~ 95%RH
  10. Transmission mode: Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
  11. TXD: Red TX indicator, light up when the USB port sends data
  12. RXD: Red RX indicator, light up when the device ports send data back

Package Includes:

1 x USB TO RS485 (B)

1 x USB-A male to female cable

1 x Screwdriver


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