Waveshare CH343G USB TO RS232/485/TTL Interface Converter, Industrial Isolation


In stock

SKU: 1367803
  1. Brand: Waveshare
  2. Product: CH343G USB TO RS232/485/TTL Interface Converter
  3. Operating voltage: 5V
  4. Connector: USB-B
  5. Protection: 200mA self-recovery fuse, isolated output
  6. Connector DB9 male


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Category: USB Interface Module

FT232RL/CH343G USB TO RS232/485/TTL Interface Converter, Industrial Isolation. Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal. unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, and low power consumption.

Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning proof & ESD protection. Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage proof, and improve shock resistance.


  1. A fully automatic transceiver circuit with no delay ensures the USB port communicates with different interfaces fastly and stably, without interfering with each other
  2. Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch
  3. Aluminum alloy enclosure with sandblasting and anodic oxidation, CNC process opening, solid and durable
  4. 3 LEDs for indicating the power and transceiver status
  5. High-quality USB-B and RS232 connectors, smoothly plug/pull

Useful link:

To do Software setup, please follow this tutorial.

Package Includes:

1 x CH343G USB TO RS232/485/TTL Interface Converter, Industrial Isolation

1 x USB Cable

SKU: 1367803 Category:
Baud rate FT232RL

300bps ~ 2 Mbps

Baud rate

FT232RL: 300bps ~ 921600 bps

Connector Screw


Direction Control

Hardware automatically discriminates and controls the direction of data transmission


600W lightningproof and surge-suppress, 15KV ESD protection (reserved 120R balancing resistor solder pads

Transmission mode

Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)



Shipment Weight

0.182 kg

Shipment Dimensions

15 × 12 × 6 cm

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Country Of Origin: China