Looking for the best TCP/IP to serial converters? We’ve compiled a list of 10 top options to help you seamlessly connect older devices to modern networks.
TCP/IP to serial converters are essential tools for connecting older devices to modern networks. They bridge the gap between RS232, RS485, or RS422 serial devices and Ethernet, making them easy to control remotely. Whether you’re upgrading industrial systems or managing home automation, these converters simplify integration and enhance flexibility.
They offer reliable connections, easy setup, and wide compatibility. With options like PoE support, Modbus conversion, and web-based configuration, they fit various needs. Dive in to find the perfect converter for your project.
List of Top 10 TCP IP To Serial Converters
| Image | Title | Best For | Price |
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Global Caché IP2SL-P iTach TCP/IP to Serial Converter with Power Over Ethernet (PoE) – Connects RS232 Control Devices to a Wired Connection |
This product is perfect for anyone who needs to control serial devices remotely with ease. It is great for users who want a simple, fast way to connect devices to the internet. Manage your devices from anywhere using your PC or mobile apps. |
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Global Caché IP2SL iTach TCP/IP to Serial Converter – Connects RS232 Control Devices to a Wired Ethernet |
The Global Caché IP2SL is perfect for anyone who wants to control serial devices like speakers or TVs remotely. It’s easy to set up and works with PC, Android, or iOS apps. |
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PUSR USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS (1) |
This RS232 to Ethernet converter is perfect for anyone needing to connect serial devices to a network. It’s ideal for simple, reliable data transmission in home setups, small businesses, or industrial environments. |
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PUSR TCP232-306 RS232 RS485 RS422 to Ethernet TCP IP Modbus Gateway Serial Device Server Serial to ethernet converters |
This product is perfect for anyone who needs to connect serial devices to an Ethernet network. It’s ideal for industrial or commercial use where reliable and stable communication is key. |
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Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc |
This product is perfect for anyone needing to connect industrial devices to a network. It’s ideal for data collection, monitoring tools, and upgrading older systems in factories or smart setups. |
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PUSR USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS (2) |
This RS232 to Ethernet converter is perfect for anyone needing to connect serial devices to a network. It’s ideal for low-cost, reliable data transmission in LAN or Internet setups. |
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PUSR USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2 |
The PUSR USR-TCP232-306 is perfect for anyone needing a simple, cost-effective way to connect serial devices to a network. It’s ideal for RS232, RS485, or RS422 setups and works great in TCP/IP environments. |
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PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway Serial to Ethernet Converter USR-TCP232-410s |
The PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway is perfect for anyone needing to connect serial devices to Ethernet networks. It’s ideal for industrial or automation setups where reliable communication is key. |
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PUSR USR-TCP232-302 Serial RS232 to Ethernet TCP IP Server Module Ethernet Converter Support DHCP/DNS |
The USR-TCP232-302 is perfect for anyone needing to connect serial devices to a network. It’s ideal for low-cost, reliable networking in LAN or internet setups. |
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PUSR Usr-Tcp232-410S Server RS232 / RS485 Serial to Ethernet Adapter TCP/IP Converter Supports DHCP/DNS |
This PUSR Usr-Tcp232-410S is perfect for anyone needing to connect serial devices to a network. It’s ideal for RS232 or RS485 setups, making it great for industrial or IoT applications. |
Detailed Reviews
Find the best TCP IP to Serial converters with our proven guide.
We combine expert knowledge and real‑world reviews for clear picks.
Each model’s speed, reliability, and price is laid out simply.
Read on to pick the perfect device that fits your needs.
1. Global Caché IP2SL-P iTach TCP/IP to Serial Converter with Power Over Ethernet (PoE) – Connects RS232 Control Devices to a Wired Connection
The Global Caché IP2SL-P turns RS232 serial devices into remote-controlled appliances. It connects them to the internet via wired TCP/IP, making control easy.
This converter has a male DB9 connector for quick setup. It supports 1200 baud to 115.2Kbaud data rates. It works with Power-over-Ethernet (PoE) for flexible power options.
The onboard server simplifies setup with iHelp Utility Software. It works with PC, iOS, and Android apps. Open API allows integration with third-party systems.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for anyone who needs to control serial devices remotely with ease. It is great for users who want a simple, fast way to connect devices to the internet. Manage your devices from anywhere using your PC or mobile apps.
Ready to Purchase?
2. Global Caché IP2SL iTach TCP/IP to Serial Converter – Connects RS232 Control Devices to a Wired Ethernet
The Global Caché IP2SL makes any RS232 device easy to control over the internet. It gives fast, simple, and steady wired network access.
You can control devices from anywhere. You can set it up fast. You can use it with many apps.
| Pros | Cons |
|---|---|
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Perfect For:
The Global Caché IP2SL is perfect for anyone who wants to control serial devices like speakers or TVs remotely. It’s easy to set up and works with PC, Android, or iOS apps.
Ready to Purchase?
3. PUSR USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS (1)
The USR-TCP232-302 gives you fast, simple, and clear data links. It turns RS232 into Ethernet with smooth, direct transmission.
It sets up fast. It gets an IP on its own. It works with many modes.
This tiny module keeps your link steady and safe. It supports TCP, UDP, and more with ease.
| Pros | Cons |
|---|---|
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Perfect For:
This RS232 to Ethernet converter is perfect for anyone needing to connect serial devices to a network. It’s ideal for simple, reliable data transmission in home setups, small businesses, or industrial environments.
Ready to Purchase?
4. PUSR TCP232-306 RS232 RS485 RS422 to Ethernet TCP IP Modbus Gateway Serial Device Server Serial to ethernet converters
The PUSR TCP232-306 is a powerful serial-to-Ethernet converter. It connects RS232, RS485, and RS422 devices to Ethernet networks. This makes it ideal for industrial applications.
It supports Modbus RTU to Modbus TCP conversion and multi-host polling. The device also features a 10/100Mbps Ethernet port with Auto MDI/MDIX support.
With an ARM core and optimized TCP/IP stack, it ensures low latency and reliability. It includes a hardware and software watchdog for automatic restarts. This makes it a stable and scalable solution.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for anyone who needs to connect serial devices to an Ethernet network. It’s ideal for industrial or commercial use where reliable and stable communication is key.
Ready to Purchase?
5. Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc
The Waveshare RS232/485/422 to RJ45 Ethernet Module is a powerful IoT gateway for industrial use. It connects serial devices to Ethernet easily. It’s compact, cost-effective, and simple to install.
It supports PoE power supply and works with DC 6~36V input. The module handles multiple protocols like Modbus, MQTT, and JSON. It ensures no crosstalk when communicating with many devices.
It’s ideal for data acquisition and intelligent monitoring. Features like NTP time sync and user-defined packets make it flexible and reliable. Perfect for industrial upgrades and IoT applications.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for anyone needing to connect industrial devices to a network. It’s ideal for data collection, monitoring tools, and upgrading older systems in factories or smart setups.
Ready to Purchase?
6. PUSR USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS (2)
The PUSR USR-TCP232-302 is a tiny, low-cost device that turns RS232 serial data into Ethernet signals. It ensures bidirectional, transparent transmission between devices.
It supports DHCP for automatic IP setup and DNS for easy network queries. You can set parameters via a webpage and upgrade firmware remotely.
Works in LAN or Internet, supports TCP/UDP modes, and has a unique MAC address. Reliable connection with heartbeat packages and custom packet headers.
| Pros | Cons |
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Perfect For:
This RS232 to Ethernet converter is perfect for anyone needing to connect serial devices to a network. It’s ideal for low-cost, reliable data transmission in LAN or Internet setups.
Ready to Purchase?
7. PUSR USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2
The USR-TCP232-306 is a cost-effective solution for serial data communication. It converts RS232, RS485, or RS422 signals to Ethernet or TCP/IP.
It works in TCP Server, TCP Client, UDP Client, UDP Server, or HTTPD Client mode. It sends serial data in HTTP format and runs on a wide power supply of 5-36V DC.
This device is easy to use and reliable. It’s a great choice for connecting serial devices to networks.
| Pros | Cons |
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Perfect For:
The PUSR USR-TCP232-306 is perfect for anyone needing a simple, cost-effective way to connect serial devices to a network. It’s ideal for RS232, RS485, or RS422 setups and works great in TCP/IP environments.
Ready to Purchase?
8. PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway Serial to Ethernet Converter USR-TCP232-410s
The PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway is a powerful tool for connecting serial devices to Ethernet networks. It supports RS232 and RS485 ports, which can be used at the same time.
It offers flexible power options, including DC 5-36V or terminal power supply. The Modbus Gateway feature lets you convert Modbus RTU to Modbus TCP easily.
Simple setup is key. Configure it via webpage, AT commands, or setup software. It works in TCP Server/Client, UDP Server/Client, or HTTPD Client modes.
| Pros | Cons |
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Perfect For:
The PUSR RS232 RS485 Modbus RTU to Modbus TCP Gateway is perfect for anyone needing to connect serial devices to Ethernet networks. It’s ideal for industrial or automation setups where reliable communication is key.
Ready to Purchase?
9. PUSR USR-TCP232-302 Serial RS232 to Ethernet TCP IP Server Module Ethernet Converter Support DHCP/DNS
USR‑TCP232‑302 turns a serial port into Ethernet. It sends and receives data easily. It costs very little.
It runs on TCP/IP so you can use it right away. It supports DHCP to get an address automatically. It can act as a server or a client.
You can set a unique MAC address from the factory. It works in a LAN or over the Internet.
| Pros | Cons |
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Perfect For:
The USR-TCP232-302 is perfect for anyone needing to connect serial devices to a network. It’s ideal for low-cost, reliable networking in LAN or internet setups.
Ready to Purchase?
10. PUSR Usr-Tcp232-410S Server RS232 / RS485 Serial to Ethernet Adapter TCP/IP Converter Supports DHCP/DNS
The PUSR Usr-Tcp232-410S is a dual serial server that connects RS232 and RS485 devices to Ethernet networks. It works with both protocols at the same time, making it very flexible. The Cortex-M4 solution ensures fast and reliable performance.
This adapter supports DHCP and DNS for easy network setup. It has a built-in website for customization and account password protection. The RJ45 port offers 10/100 Mbps speeds with Auto-Mdi/Mdix.
With a unique MAC address, it’s ready for use right away. It also supports Modbus RTU to Modbus TCP conversion. This makes it ideal for industrial and automation applications.
| Pros | Cons |
|---|---|
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Perfect For:
This PUSR Usr-Tcp232-410S is perfect for anyone needing to connect serial devices to a network. It’s ideal for RS232 or RS485 setups, making it great for industrial or IoT applications.
Ready to Purchase?
Buying Guide
TCP/IP to serial converters are essential tools for connecting older devices to modern networks. They make it easy to control devices remotely.
When buying a TCP/IP to serial converter, consider these factors:
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Compatibility: Ensure the converter supports your device’s serial protocol (RS232, RS485, or RS422). Check if it works with your network type (Ethernet).
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Power options: Look for converters with Power-over-Ethernet (PoE) or flexible power supply options (DC 5-36V). This ensures easy installation and reliability.
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Data rates: Choose a converter that supports the required data rates (e.g., 1200 baud to 115.2Kbaud). This ensures smooth communication between devices.
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Setup and configuration: Opt for converters with easy setup, web-based configuration, or utility software. This simplifies the installation process and saves time.
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Protocol support: Consider converters that support multiple protocols (Modbus, MQTT, JSON, etc.). This ensures compatibility with various devices and systems.
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Reliability and stability: Look for converters with low latency, hardware/software watchdog, and automatic restart features. This ensures a stable and reliable connection.
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Size and cost: Choose a converter that fits your budget and space requirements. Tiny, low-cost options are available for simple applications.
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Additional features: Consider converters with NTP time sync, user-defined packets, or remote firmware upgrades. These features enhance flexibility and functionality.
By considering these factors, you’ll find the perfect TCP/IP to serial converter for your project. Enjoy seamless integration and remote control of your devices.