# Industrial Isolated USB To 4-Ch RS232 Converter

**Type:** Product page · **SKU:** WS-27022 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/waveshare-industrial-usb-to-4ch-rs232-converter.html ([markdown](https://core-electronics.com.au/waveshare-industrial-usb-to-4ch-rs232-converter.html.md))

Industrial Isolated USB To 4-Ch RS485 Converter (B), CH344L Chip, Multi Protection Circuits, Multi Systems Support, Aluminium Alloy Case, Wall-Mount &...

## Pricing

- **Price:** $54.80 (inc GST) — $49.82 AUD, exc GST
- **Quantity discounts:** 6+ $47.83 (exc GST) · 12+ $46.33 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 07 and Sep 14.

## Description

This device uses the original FT4232HL chip for fast, stable, and reliable communication, with excellent compatibility. It supports USB connections to four isolated RS232 channels, enabling easy expansion for industrial serial devices. The design includes a built-in power supply isolation for stable voltage and digital isolation for high reliability and low power consumption. To protect against voltage surges and spikes, it features an onboard Transient Voltage Suppressor. It also includes a self-recovery fuse and protection diodes to ensure stable current and voltage with over-current and over-voltage protection. The power supply can be input through a screw terminal, supporting a range from 5V to 36V DC. Additionally, there are nine LEDs to indicate power and transceiver status, all encased in a durable aluminum alloy enclosure with a sandblasted and anodized finish.

## Specifications

- Host Port: USB
- Device Port: RS232
- Baud Rate: 300bps to 921600bps
- USB Operating Voltage: 5V
- USB Connector: USB-B
- USB Protection: 200mA self-recovery fuse, isolated output
- USB Transmission Distance: About 5 meters
- Power Supply Interface: 
    - Power Supply: 5 to 36V DC screw terminal
    - Protection: Anti-reverse
- Isolated RS232: 
    - Connector: DB9 female
    - Protection: TVS diode, surge protection, ESD protection, power isolation, and signal isolation
    - Transmission Mode: Point-to-point
    - Transmission Distance: About 15 meters
- Indicators: 
    - PWR: Red power indicator, lights up when there is a USB connection and voltage is detected
    - TXD1~4: Green TX indicator, blinks when the RS232 port is sending data
    - RXD1~4: Blue RX indicator, blinks when the RS232 port is receiving data
- Operating Environment: 
    - Temperature Range: -40°C to 85°C
    - Humidity Range: 5% RH to 95% RH
- Operating System Compatibility: MacOS, Linux, Android, Windows 11, 10, 8.1, 8, 7
 
## Pinout

## ![USB TO 4CH RS232 pin definition](https://core-electronics.com.au/attachments/localcontent/USB-TO-4CH-RS232-details-13_26223520f8c.jpg)

## Dimensions

 ![USB TO 4CH RS232 outline dimensions](https://core-electronics.com.au/attachments/localcontent/USB-TO-4CH-RS232-details-size_16922c02e6c.jpg)## Documents

- **WIKI**
 
## What's included

- 1 x OPTIONS USB TO 4CH RS232
- 1 x USB type-A to type-B cable ~1.2m
- 1 x Power adapter

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-27022-1.jpg)