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Industrial USB to RS485 Bidirectional Converter (B) CH343G and SP485EEN Chips

Original price 127 kr - Original price 127 kr
Original price
127 kr
127 kr - 127 kr
Current price 127 kr
in stock, ready to be shipped
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Download USB to RS485 Converter (B) User Manual and Resources

Introducing the Industrial USB TO RS485 Bidirectional Converter, an exceptional tool that offers fast and reliable communication while ensuring better compatibility. With this product, you can effortlessly convert USB signals into balanced differential RS485 signals and vice versa.

The product is equipped with onboard original CH343G and SP485EEN chips, providing better stability and compatibility, a built-in lightning-proof tube, a resettable fuse, ESD, and TVS protection circuits, ensuring optimum protection of your equipment.


  • Supports bidirectional conversion from USB to RS485
  • Offers fast and stable communication with better compatibility
  • Equipped with onboard TVS to suppress surge voltage and transient spike voltage in the circuit, making it lightning-proof and anti-electrostatic
  • Features an onboard resettable fuse and protection diodes to ensure stable current and voltage outputs, providing over-current and over-voltage proof, and improving shock resistance
  • Comes with 3 LEDs to indicate power and transceiver status

Original SP485EEN and CH343G Chips Onboard

Stable and reliable transmission.

Multiple Protection Circuits

This converter offers multiple protection circuits such as onboard TVS (Transient Voltage Suppressor) and protection diodes to suppress surge voltage and transient spike voltage in the circuit, thus making it lightning-proof and anti-electrostatic. Additionally, it has an onboard resettable fuse, which ensures the current/voltage stable outputs, provides over-current/over-voltage proof, and improves shock resistance.

Long Range Transmission

The converter has a reliable speed of 300bps ~ 3Mbps, and the transmission distance is about 1.2km for RS485 and approximately 5 meters for USB, allowing for efficient and fast data transmission.

Compatible with Multiple Operating Systems

This converter supports various systems such as Mac, Linux, Android, WinCE, Win11/10/8.1/8/7/XP, making it versatile and suitable for different devices.

Status Indicators

  • PWR: RED when voltage is detected to the USB connection
  • TXD: RED when USB port is transmitting data
  • RXD: RED when data is being sent back from the device ports

Possible Applications

The product comes with three LEDs for indicating the power and transceiver status, providing you with a visual reference of the working status of the device. With this Industrial USB TO RS485 Bidirectional Converter, you can easily convert your USB signals to RS485 signals and vice versa, making it an ideal product for the following applications:

  • Industrial automation control systems
  • Building automation systems
  • Access control systems
  • Parking systems
  • Security systems
  • Environmental monitoring systems
  • LED display control systems

Outline Dimensions


  • Converter Type: USB to RS485 Industrial Grade Converter
  • Device Port: RS485
  • HOST Port: USB
  • Baudrate: 300 bps ~ 3 Mbps
  • Operating Temperature: -15℃ ~ 70℃
  • Operating Humidity: 5%RH ~ 95%RH
  • Compatible Operating Systems: Android, Linux, Mac, Windows 7, 8, 8.1, 10, 11


  • Operating Voltage: 3V
  • Protection: Self-recovery fuse 200mA | ESP protection
  • Connector: USB-A
  • Transmission Distance: Approximately 5 meters


  • Pins: GND, A+, B-
  • Connector: Screw Terminal
  • Direction Control: Automatic Hardware Control
  • Transmission Distance (Low Rate): Up to 1.2 Kilometers
  • Protection: 15KV ESD Protection | 600W Surge Suppress and Lightning Proof | 120R Balancing Resistor Onboard
  • Transmission Mode: Point-to-Multipoints (Maximum 32 Nodes | Repeaters are recommended for over 16 nodes)

Items Included

  • USB to RS485 Converter (B)
  • USB-A (Male to Female) Cable
  • Screwdriver

Package Weight: 85 Grams

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