---
product_id: 486932626
title: "Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km"
brand: "coolwell"
price: "฿2592"
currency: THB
in_stock: true
reviews_count: 2
url: https://www.desertcart.co.th/products/486932626-coolwell-industrial-usb-to-rs485-bidirectional-converter-module-onboard-original
store_origin: TH
region: Thailand
---

# Surge protection 1.2km range USB connectivity Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km

**Brand:** coolwell
**Price:** ฿2592
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with Confidence!

## Quick Answers

- **What is this?** Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km by coolwell
- **How much does it cost?** ฿2592 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/486932626-coolwell-industrial-usb-to-rs485-bidirectional-converter-module-onboard-original)

## Best For

- coolwell enthusiasts

## Why This Product

- Trusted coolwell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🔋 Power Status at a Glance:** Three LED indicators keep you informed about power and transceiver status.
- • **🔄 Resettable Fuse for Safety:** Stay worry-free with a resettable fuse that protects against over-current.
- • **🛡️ Built-in Surge Protection:** Onboard TVS safeguards against voltage spikes, ensuring longevity.
- • **🚀 Fast & Reliable Communication:** Experience seamless data transfer with enhanced compatibility.
- • **🌩️ Lightning & Electrostatic Defense:** Designed to withstand harsh conditions, keeping your connections safe.

## Overview

The CoolwellIndustrial USB to RS485 Bidirectional Converter Module features the original CH343G and SP485EEN chipsets, ensuring fast and reliable communication over distances up to 1.2km. With built-in surge protection, resettable fuses, and LED indicators, this module is designed for stability and safety in demanding environments.

## Description

Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km

## Features

- 3 LEDs for indicating the power and transceiver status
- Fast communication, stable and reliable, better compatibility
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B84TZTS4 |
| Best Sellers Rank | #1,218 in Serial Adapters |
| Customer Reviews | 4.7 4.7 out of 5 stars (3) |
| Date First Available | July 30, 2022 |
| Item Weight | 3.88 ounces |
| Manufacturer | Coolwell |
| Package Dimensions | 3.94 x 2.36 x 0.79 inches |

## Product Details

- **Brand:** Coolwell
- **Hardware interface:** USB
- **Manufacturer:** Coolwell
- **UPC:** 717981861840

## Images

![Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km - Image 1](https://m.media-amazon.com/images/I/41wJxzjKPBL.jpg)
![Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km - Image 2](https://m.media-amazon.com/images/I/41VYiQiDreL.jpg)
![Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km - Image 3](https://m.media-amazon.com/images/I/51yQCfVbsLL.jpg)
![Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km - Image 4](https://m.media-amazon.com/images/I/61fKxDsEKdL.jpg)
![Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km - Image 5](https://m.media-amazon.com/images/I/61C9CDdqE0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Great module for RS-485 functionality
  

*by R***X on Reviewed in the United States on 22 June 2023*

Works great for PTZ camera and menu control.  The connectors are solid and the stick feels fairly substantial.  The included USB extender cable sets this apart as it doesn't have to remain stuck straight out of the back of the computer.

### ⭐⭐⭐⭐⭐ 







  
  
    Works as advertised!
  

*by B***. on Reviewed in the United States on 23 June 2023*

This connected right up to my Windows 10 computer and was recognized immediately as a CH343 in device manager.  Drivers installed automatically and it works as intended.  It even comes with a little screwdriver for connecting to the phoenix terminals and a USB-A extension cable.  Very nice!

## Frequently Bought Together

- Coolwell Industrial USB to RS485 Bidirectional Converter Module, Onboard Original CH343G and SP485EEN, Onboard TVS, Transmission Distance Up to 1.2km
- Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments
- USB to RS485 Converter Industrial Adapter Original FT232RL and SP485EEN Fast Communication Embedded Protection Circuits Resettable Fuse ESD Protection

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/486932626-coolwell-industrial-usb-to-rs485-bidirectional-converter-module-onboard-original](https://www.desertcart.co.th/products/486932626-coolwell-industrial-usb-to-rs485-bidirectional-converter-module-onboard-original)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-13*