Best Waveshare Serial Adapters of 2026

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 4 Feb 2026

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Serial adapters are essential tools for connecting different devices with serial ports. The Waveshare brand offers a range of reliable and high-quality serial adapters that can be used for various applications. These adapters are designed to provide stable and consistent connections for serial communication between devices such as computers, routers, and other electronic equipment. Whether you need to connect a device to a computer or to a network, Waveshare's serial adapters provide a simple and effective solution.

At a Glance: Our Top Picks

Waveshare USB TO TTL Serial Converter Cable Cover #TOP 1
Waveshare USB TO TTL Serial Converter Cable
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Waveshare USB to RS485 Converter Adapter Cover #TOP 2
Waveshare USB to RS485 Converter Adapter
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Waveshare RS485 to RJ45 Ethernet Converter Module Cover #TOP 3
Waveshare RS485 to RJ45 Ethernet Converter Module
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Top 9 Waveshare Serial Adapters

#TOP 1

Waveshare USB TO TTL Serial Converter Cable

USB TO TTL (D) Cable
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Waveshare USB TO TTL Serial Converter Cable Cover
Waveshare Industrial USB TO TTL Serial Converter Adapter Cable USB TO TTL (D) Adapter 3.3V 5V Onboard FT232RNL Chip Suitable For Raspberry Pi 5 Serial Port Debugging

The Waveshare USB TO TTL Converter is ideal for serial port debugging of industrial equipment, including the Raspberry Pi 5. With onboard FT232RNL chips, it offers enhanced stability and compatibility, ensuring reliable performance. You can easily connect it to various systems, such as Windows, Mac, Linux, and Android, providing you with flexible options for your projects. Additionally, three LED indicators allow you to quickly check the operating status, making programming and debugging more convenient for you.

What We Like
High stability and compatibility
Supports multiple connection methods
Compatible with various operating systems
LED indicators for easy status check
#TOP 2

Waveshare USB to RS485 Converter Adapter

USB to RS485 Converter B
Black
Waveshare USB to RS485 Converter Adapter Cover
Industrial USB to RS485 Converter Adapter with Original CH343G and SP485EEN, Built-in Lightningproof Tube, Resettable Fuse, ESD and TVS Protection Circuits, up to 1.2km RS485 Transmission Distance

The Waveshare RS485 Converter offers seamless USB to RS485 bidirectional conversion, making it ideal for users needing fast and reliable communication. Its onboard transient voltage suppressor effectively protects against surge and spike voltages, ensuring a lightningproof and anti-electrostatic experience. Additionally, the resettable fuse and protection diodes stabilise current and voltage outputs, providing peace of mind against over-current and over-voltage situations. With three LEDs to indicate power and transceiver status, you can easily monitor your device's functionality.

What We Like
Fast and reliable communication
Lightningproof and anti-electrostatic
Over-current and over-voltage protection
Easy monitoring with LED indicators
#TOP 3

Waveshare RS485 to RJ45 Ethernet Converter Module

RS485 TO Ethernet Converter (B)
Transparent/Green
Waveshare RS485 to RJ45 Ethernet Converter Module Cover
Waveshare RS485 to RJ45 Ethernet Converter Module, Industrial Rail-mount RS485 Serial Server,TCP/IP to Serial Module,300~115200 bps Baudrate,10 / 100M auto-negotiation RJ45 connector

The Waveshare RS485 Ethernet Converter offers bi-directional transparent data transmission between RS485 and Ethernet, making it essential for seamless connectivity. Its rail-mount support allows you to easily combine multiple serial servers, providing a flexible setup for your needs. With Modbus gateway support, you can efficiently upgrade your Modbus system using 3D configuration software. Additionally, the product supports multiple communication modes, including TCP Server, TCP Client, and UDP, ensuring versatile options for your network setup.

What We Like
Bi-directional data transmission
Easy rail-mount integration
Modbus upgrade capability
Multiple communication modes
#TOP 4

Waveshare USB to RS485 Converter with Protection

USB_TO_RS485_B
Waveshare USB to RS485 Converter with Protection Cover
Waveshare Industrial USB to RS485 Converter Adapter with original CH343G And SP485EEN 300bps ~ 3Mbps Baudrate Built-In Lightningproof Tube,Resettable Fuse, ESD And TVS Protection Circuits

The Waveshare RS485 Converter offers reliable USB to RS485 bi-directional communication, making it easy for you to connect devices across different systems. Its fast and stable data transfer ensures smooth operation without interruptions, ideal for various applications. With a built-in transient voltage suppressor (TVS), it protects your equipment from sudden voltage surges and lightning strikes, enhancing safety. Additionally, the resettable fuse and protection diodes maintain steady current and voltage, preventing damage from over-current or power surges, so you can use it with confidence.

What We Like
Reliable bi-directional conversion
Fast and stable communication
Built-in surge and lightning protection
Resettable fuse for safety
Clear LED status indicators
#TOP 5

Waveshare USB to 4-Channel Serial Converter

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Waveshare USB to 4-Channel Serial Converter Cover
Waveshare Industrial USB to 4-Ch Serial Converter, Original FT4232HL Chip, Supports USB to RS232/485/422/TTL, Multiple Devices Applicable, Multi-OS Compatible

The Waveshare Serial Converter is an essential tool for industrial applications, offering fast and stable communication through its original FT4232HL chip. You will appreciate the convenience of connecting multiple devices with four different serial ports, making debugging simpler. The onboard power supply isolation ensures reliable voltage without extra power requirements, while digital isolation enhances signal reliability and reduces interference. With its automatic transceiver circuit, you can expect quick communication across various interfaces without delays.

What We Like
Fast and stable communication
Multiple device compatibility
Power supply isolation
High reliability and anti-interference
#TOP 6

Waveshare USB to RS485/RS232 Converter Adapter

WAV_17286
Waveshare USB to RS485/RS232 Converter Adapter Cover
waveshare USB to RS232/485 Serial Converter Adapter, Onboard Original FT232RNL Chip, Built-in self-Recovering Fuse, TVS Protection Circuit, etc. Compatible with Mac, Linux, Android, Win11/10/8.1/8/7

The Waveshare Serial Converter is a versatile USB to RS232/485 converter designed for improved stability and compatibility, thanks to its original FT232RNL chip. It features a built-in self-recovering fuse that offers protection against over-current and over-voltage, ensuring safe operation. The onboard TVS protection circuit effectively suppresses surge voltages, safeguarding your devices against lightning and electrostatic discharge. With zero-delay automatic transmission and reception, you can expect fast and reliable communication, making your tasks more efficient and hassle-free.

What We Like
Easy to use
Compact and portable
Reliable communication
Built-in protection features
#TOP 7

Waveshare Rail-Mount TTL to RS232 Isolated Converter

TTL TO RS232 (B)
Waveshare Rail-Mount TTL to RS232 Isolated Converter Cover
Waveshare Rail-Mount TTL To RS232 Galvanic Isolated Converter, Full-Duplex Communication, Lightningproof & Anti-Surge, Multi-Isolation Protection, TTL Serial Converter

The Waveshare TTL to RS232 is ideal for users needing reliable point-to-point communication, whether between two hosts or a host and peripheral devices. It converts TTL signals to RS232, supporting full-duplex communication, so you can enjoy seamless data exchange. Compatible with 3.3V to 5V TTL levels, it protects your device from reverse polarity and over-voltage issues, ensuring safe operation. The onboard power supply isolation provides stable voltage without requiring extra power, while digital isolation boosts signal reliability and reduces interference, making this converter a dependable choice for industrial and IoT applications.

What We Like
Supports full-duplex communication
Wide voltage compatibility
Built-in power isolation
Strong interference protection
Compact rail-mount design
#TOP 8

Waveshare 2-CH UART to Ethernet Converter

BC-2-CH UART To Ethernet Converter-W
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Waveshare 2-CH UART to Ethernet Converter Cover
2-CH UART to Ethernet Converter UART TTL to RJ45 Ethernet Serial Port Transparent Transmission Module for Raspberry Pi/Arduino/STM32

The Waveshare UART Ethernet Converter enables seamless bi-directional data transmission between UART and Ethernet for devices like Raspberry Pi, Arduino, and STM32. It features a full-duplex/half-duplex Ethernet interface, allowing for reliable communication. With 2-CH UART concurrent operation, you can transmit data independently on each channel, enhancing your project flexibility. Furthermore, it supports automatic cable detection and switching, ensuring a hassle-free setup. The convenience of DHCP auto-obtained IP adds to its user-friendly nature, making networking simpler for you.

What We Like
Supports multiple devices
Flexible communication modes
Automatic cable detection
User-friendly DHCP setup
#TOP 9

Waveshare USB to RS232/RS485/TTL Isolated Converter

USB TO RS232/485/TTL (B) Adapter
Black
Waveshare USB to RS232/RS485/TTL Isolated Converter Cover
Waveshare USB to RS232/RS485/TTL(UART) Interface Converter Industrial Isolated Converter Adapter with Original CH343G Chip, up to 2 Mbps Baudrate,Onboard Power Isolation, Transient Voltage Suppressor

The Waveshare USB Serial Converter offers fast and stable communication thanks to its original FT232RL or CH343G chip, ensuring compatibility with various interfaces without interference. It features onboard power supply isolation, providing stable voltage without needing an extra power source, which is convenient for your setup. Digital isolation improves reliability and reduces power consumption, making your connections more secure. Additionally, the built-in transient voltage suppressor protects against voltage spikes and surges, safeguarding your devices from potential damage.

What We Like
Fast and stable communication
Built-in power isolation
High reliability with digital isolation
Surge and voltage spike protection
Supports multiple serial interfaces
Buying Guide Image
Editor's Notes

During our Waveshare serial adapter research, we found 34 Waveshare serial adapter products and shortlisted 9 quality products. We collected and analyzed 4,806 customer reviews through our big data system to write the Waveshare serial adapters list. We found that most customers choose Waveshare serial adapters with an average price of £19.92.

The Waveshare serial adapters are available for purchase. The top 9 picks range in price from a low of £12.00 to a high of £36.00, find the one that fits your budget.

Written by
Kenneth Collin Avatar

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.