> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Industrial Isolated USB To 4-Ch RS485 Converter (B)

**Type:** Product page · **SKU:** WS-26545 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/industrial-usb-to-rs485-4-channel-isolated-converter.html ([markdown](https://core-electronics.com.au/industrial-usb-to-rs485-4-channel-isolated-converter.html.md))

USB-to-RS485 converter with four isolated channels and built-in surge and ESD protection, for stable multi-OS communication in an aluminium alloy case.

## Pricing

- **Price:** $40.10 (inc GST) — $36.45 AUD, exc GST
- **Quantity discounts:** 10+ $35.00 (exc GST) · 25+ $33.90 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 31.

## How to buy

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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Expand your PC’s serial communications with a robust, quad-channel interface. The **Industrial Isolated USB To 4-Ch RS485 Converter (B)** delivers reliable, galvanically isolated RS485 links for Modbus networks, sensor arrays and motor control.

Featuring the high-performance CH344L USB controller, four independent isolated channels and full surge protection, it’s ideal for industrial automation, data logging and multi-node networks over distances up to 1.2 km.

### Specifications

- **USB Interface:** USB-B connector, 5 V bus-powered, 500 mA resettable fuse, CH344L chip
- **RS485 Channels:** 4× isolated screw-terminal ports, hardware auto-direction control
- **Baud Rate:** 1 200 – 460 800 bps
- **Isolation:** Unibody power and digital isolation, no external PSU required
- **Surge & ESD Protection:** Onboard TVS, self-recovery fuse, protection diodes, 600 W surge, 15 kV ESD
- **Termination:** 120 Ω resistors per channel, DIP-switch enable/disable
- **Indicators:** PWR (USB power), ACT (driver status), TXD/RXD per channel
- **Transmission Distance:** Up to 1.2 km on RS485; ~5 m on USB
- **Operating Conditions:** –40 °C to 85 °C, 5 %–95 % RH
- **OS Support:** Windows 7/8/8.1/10/11, macOS, Linux, Android
- **Enclosure:** Aluminium alloy case; wall-mount & DIN-rail support
 
### How to Use

1. Mount the converter using the included rail-mount buckle or wall brackets.
2. Connect a USB Type A–Type B cable between your PC’s USB port and the converter’s USB-B socket.
3. Wire your RS485 devices to the four screw terminals; set 120 Ω termination switches on end-of-line nodes.
4. Install the CH344L driver on Windows (plug-and-play on macOS/Linux/Android); verify ACT LED lights green.
5. Power is drawn from USB—no extra supply needed; PWR LED confirms bus voltage.
 
### Compatibility

- Windows 7, 8, 8.1, 10 and 11
- macOS and mainstream Linux distributions
- Android devices with USB‐OTG support
- Industrial RS485 devices: sensors, PLCs, motor drives
- Modbus RTU networks (point-to-multipoint, up to 32 nodes)
 
### Additional Resources

- Waveshare USB To 4-Ch RS485 (B) Wiki
 
### What’s Included

- Industrial Isolated USB To 4-Ch RS485 Converter (B) × 1
- Rail-mount buckle × 1
- USB Type A to Type B cable (~1.2 m) × 1
- Screwdriver × 1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-26545-3.jpg)