Serial to IP adapters convert RS232 or RS485 signals into Ethernet data streams, enabling remote management, monitoring, and control over standard IP networks. This guide highlights five reliable options, detailing how they support transparent data transmission, configurable network settings, and scalable deployment. Whether you are integrating legacy equipment, POS systems, or industrial sensors, these devices offer varying port counts, speeds, and management features to fit different environments.
| Product | Brand | Type | Notable Benefit |
|---|---|---|---|
| USR-TCP232-302 Tiny Size RS232 to TCP IP Converter | PUSR | 1-port serial to IP server | DHCP/DNS support; built-in web config; transparent bidirectional transmission |
| StarTech 1-Port Serial to Ethernet Adapter | StarTech | 1-port serial to IP device server | Unified management UI; TCP client/server modes; easy virtual port setup |
| USR-TCP232-302 Tiny Size (2nd listing) | PUSR | 1-port serial to IP server | DHCP/DNS; web-driven parameter setup; network firmware upgrades |
| USR-TCP232-304 Serial RS485 to TCP/IP | PUSR | 1-port RS485 to IP | RS485-to-Ethernet conversion; DHCP/DNS; transparent data transfer |
| Global Caché IP2SL iTach | Global Caché | Serial to IP converter | Remotely control RS232 devices; fast 1200–115.2K baud range |
id=”product-1″>USR-TCP232-302 Tiny Size RS232 To TCP IP Converter
This device operates as a transparent serial RS232 to Ethernet server, enabling bidirectional data flow between RS232 equipment and an Ethernet network. It integrates TCP/IP natively and supports DHCP to automatically obtain an IP address, along with DNS. Configuration is accessible via a built-in web interface. The RJ45 port supports 10/100 Mbps and baud rates from 600 bps to 230.4 Kbps. Supported parity options include None, Odd, Even, Mark, and Space. Auto-MDI/MDIX simplifies installation across varying network topologies.
id=”product-2″>StarTech 1-Port Serial to Ethernet Adapter
This single-port serial to IP converter supports remote connectivity for RS232 devices via IP networks. It is suitable for POS systems, barcode readers, sensors, and PLC-based equipment. The RS232 DB9 port supports up to 921.6 Kbps. The product emphasizes a unified management experience with a common UI and Web UI across StarTech device servers. It offers TCP client/server modes, allowing serial tunneling over a LAN, and supports configuration export/import, custom naming, location fields, admin passwords, and firmware upgrades.
id=”product-3″>USR-TCP232-302 Tiny Size RS232 to TCP IP Converter (2)
This variant mirrors the first USR-TCP232-302 model, offering transparent RS232 to Ethernet forwarding with built-in TCP/IP support. It includes DHCP for IP assignment and DNS support, a web-based parameter setup, and network-based firmware updates. The interface supports auto-MDI/MDIX and a 10/100 Mbps RJ45 port, with a baud rate range from 600 bps to 230.4 Kbps and parity options None, Odd, Even, Mark, and Space for flexible serial communication configurations.
id=”product-4″>USR-TCP232-304 Serial RS485 To TCP/IP Ethernet Server
This converter enables transparent data transmission between TCP/IP networks and RS485 serial lines. It is designed for RS485-enabled devices requiring Ethernet connectivity. DHCP support allows automatic IP address assignment, with DNS capabilities for name resolution. The device features a wide baud rate range (600 bps to 230.4 Kbps) and supports common parity settings. Like other models, it uses Auto-MDI/MDIX and a 10/100 Mbps RJ45 interface for straightforward installation in industrial networks.
id=”product-5″>StarTech USB To Serial Adapter, 2 Port
This 2-port USB to RS232 serial adapter provides rugged metal construction and wall-mount resilience with DIN Rail clips included. While not a pure networked device like Ethernet gateways, it offers reliable serial connectivity to a PC or embedded system when RS232 endpoints need a robust USB bridge. It is suitable for lab setups, point-of-sale peripherals, and industrial interfaces requiring compact, durable serial conversion to a computer host.
id=”product-6″>Global Caché IP2SL iTach TCP/IP To Serial Converter
The IP2SL turns RS232-connected devices into IP-enabled appliances by attaching them to a wired TCP/IP network. It supports remote control of serial devices such as speakers and televisions via network access. The converter features a DB9 connector supporting 1200 to 115.2K baud rates, enabling fast and flexible serial communication over Ethernet. This model is often used in home automation and professional AV environments for remote control and monitoring of serial devices.
id=”buying-guide”>Buying Guide: Key Factors To Consider When Choosing A Serial-To-IP Adapter
- Port count and type: Decide between single-port and multi-port devices. If you need to connect several RS232/RS485 devices, a 4-port or multi-port model may reduce hardware clutter and simplify management.
- Interface and speed: Look for RJ45 10/100 Mbps support and baud rate ranges that cover your existing equipment (typically 600 bps to 230.4 Kbps for many industrial devices).
- Network features: DHCP support simplifies IP management. DNS support and a web-based configuration interface make deployment straightforward. Consider devices with firmware upgrade over the network for future-proofing.
- Parity and data settings: Ensure support for standard parity options (None, Odd, Even, Mark, Space) to match your serial devices and error-checking needs.
- Management and software: A unified management UI or Windows-based software that can configure multiple devices from one console saves time in larger deployments.
- Power and placement: PoE options can simplify power delivery for networked devices, while compact form factors work well in tight enclosures.
- Bi-directional transparency: If seamless two-way data flow is critical, confirm that the device supports transparent serial data transmission without modifying payloads.
- Compatibility with RS232 vs RS485: RS485 models are better for long-distance or multi-drop configurations; RS232 is typical for point-to-point links.
- Security considerations: Ensure available firmware updates and secure remote management capabilities to minimize network exposure.
- Physical installation: Wall or DIN rail mounting options can simplify deployment in industrial environments.