Brainboxes ES-257 Multiport Serial Adapter, 2 Port RS232 Ethernet to Serial, DIN Rail Mountable, Network-enabled, TAA Compliant, UK Origin (1 Year Warranty)

Front angled view of Brainboxes ES-257 Ethernet to Serial adapter showing dual RS232 ports and status indicators-alternate-image1
Front view of ES-257 showing status LEDs, ethernet port, and dual RS232 connections-alternate-image2
Side angle view of ES-257 showing mounting brackets and port accessibility-alternate-image3
Bottom view of ES-257 showing dual RS232 ports and certification markings-alternate-image4
RS232 pinout diagram showing 9-pin male connector configuration and pin assignments-alternate-image5

Brainboxes ES-257 Multiport Serial Adapter, 2 Port RS232 Ethernet to Serial, DIN Rail Mountable, Network-enabled, TAA Compliant, UK Origin (1 Year Warranty)

Brainboxes ES-257

$194.49 $197.85 Save $3.36
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  • 1 Year Warranty
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Product Key Features

  • 🔌 2 RS232 serial ports for network connectivity
  • ⚡ High-speed data transfer up to 1,000,000 baud
  • 🌐 Web interface for secure remote configuration
  • 💻 Windows driver support (32/64-bit) for local COM ports
  • 🔄 Serial Port Tunnelling for cable replacement
  • 🛤️ DIN Rail mountable design
  • 🇬🇧 Made in United Kingdom
  • ✅ TAA Compliant certification
  • 📱 Compatible with multiple devices (PC, Android, phones)
  • 🏢 Compact size: 4.1" x 4.2" x 1.1"
$194.49
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Brainboxes ES-257 Multiport Serial Adapter, 2 Port RS232 Ethernet to Serial, DIN Rail Mountable, Network-enabled, TAA Compliant, UK Origin (1 Year Warranty)

This item: Brainboxes ES-257 Multiport Serial Adapter, 2 Port RS232 ...

$194.49

Total price: $194.49
  • Description
  • Tech Specs
  • Refund Policy

Brainboxes

ES-257

Brainboxes ES-257 2 Port RS232 Ethernet to Serial Adapter

Transform your network connectivity with the Brainboxes ES-257, a high-performance 2-port RS232 Ethernet to Serial adapter. This TAA-compliant device, proudly manufactured in the United Kingdom, delivers exceptional data transfer rates up to 1,000,000 baud with 1Mbit/s line drivers for uncompromising serial communication performance.

Advanced Connectivity Features

Key Specifications

  • Dual RS232 serial ports for versatile connectivity
  • High-speed data transfer up to 1,000,000 baud
  • DIN Rail mountable form factor
  • Compact dimensions: 4.1" width x 4.2" depth x 1.1" height
  • Lightweight design at 4.44 ounces

Network Integration & Software Compatibility

Access and configure your serial ports securely through any web browser using the intuitive web interface. The ES-257 supports both local network and internet-based management, offering maximum flexibility for remote device control.

Windows Driver Support

Featuring custom-designed 32-bit and 64-bit Windows drivers, the ES-257 creates local COM ports that maintain compatibility with existing software applications. Connect to remote devices across your network as if they were locally attached, ensuring seamless integration with your current infrastructure.

Serial Port Tunneling Capabilities

Implement serial cable replacement over any distance with individually configurable Serial Port Tunneling, requiring no additional software. Access your device through TCP/IP sockets from any networked device, including Android tablets, PCs, or phones, with Windows OS utilizing the Winsock API for TCP/IP socket handling.

Front angled view of Brainboxes ES-257 Ethernet to Serial adapter showing dual RS232 ports and status indicators

Dual RS232 Ports Enable Seamless Network Integration

The ES-257 features two robust RS232 serial ports in a compact, industrial-grade housing. The distinctive black and yellow design highlights the device's dual-port functionality, with clear port labeling and status indicators for intuitive operation. The integrated mounting brackets ensure stable installation in industrial environments.

Technical Specifications

  • Dual RS232 ports supporting data rates up to 1,000,000 baud
  • Built-in status LEDs for network, port 1, and port 2 monitoring
  • 5-30V DC power input range for flexible deployment

Applications

  • Industrial automation system integration
  • Legacy equipment networking modernization
  • Remote serial device monitoring and control
Front view of ES-257 showing status LEDs, ethernet port, and dual RS232 connections

Industrial-Grade Design with Clear Status Indicators

The front panel layout emphasizes operational clarity with prominent status indicators for network connectivity and port activity. The device features a reset button for quick troubleshooting and an ethernet port for network integration. The rugged housing is engineered for reliability in demanding industrial environments.

Technical Specifications

  • Comprehensive LED status display system
  • Industrial-grade metal housing construction
  • Integrated ethernet port for network connectivity

Applications

  • Manufacturing process control systems
  • Building automation integration
  • Industrial IoT deployment
Side angle view of ES-257 showing mounting brackets and port accessibility

Side Profile Reveals Compact Industrial Design

The side view showcases the ES-257's efficient space utilization and robust mounting options. The angled perspective highlights the device's compact form factor while maintaining full industrial functionality. The serial ports are easily accessible for cable connection and maintenance.

Technical Specifications

  • DIN rail mounting compatibility
  • Compact 4.1" x 4.2" x 1.1" dimensions
  • Durable metal chassis construction

Applications

  • Control cabinet integration
  • Production line equipment connectivity
  • Facility management systems
Bottom view of ES-257 showing dual RS232 ports and certification markings

Bottom View Showcases Port Configuration

The bottom perspective reveals the dual RS232 port configuration and certification markings. The device's CE compliance and serial number are clearly visible, confirming its adherence to international standards. The robust metal housing ensures long-term durability in industrial settings.

Technical Specifications

  • CE certified for international compliance
  • Dual 9-pin D-Sub male connectors
  • Industrial-grade metal construction

Applications

  • Quality control system integration
  • Machine monitoring applications
  • Industrial process automation
RS232 pinout diagram showing 9-pin male connector configuration and pin assignments

RS232 Pin Configuration Details

The detailed pinout diagram provides essential connection information for the RS232 ports. Each pin's function is clearly labeled, facilitating proper cable configuration and system integration. The 9-pin male connector layout ensures compatibility with standard RS232 devices.

Technical Specifications

  • Standard 9-pin D-Sub male configuration
  • Complete pin function documentation
  • Industry-standard RS232 signal support

Applications

  • Custom cable configuration
  • System integration planning
  • Technical documentation reference
Return Policy Time to Return
Standard Return Policy We offer a hassle-free 30-day returns policy for domestic (US) orders, excluding non-refundable items. Refund or Replacement within 30 days of the delivery date. All products that fall under the Standard Return Policy qualify for our 30-Day Hassle-Free Returns.
Replacement Only Return Policy Replacement within 30 days of the delivery date.
Manufacturer Only Return Policy Covered by the manufacturer's warranty. Please refer to the terms and conditions for the manufacturer's warranty or contact the manufacturer.
FAQ
The Brainboxes ES-257 is a 2-port RS232 Ethernet to Serial Adapter that converts Ethernet connections to serial communications. It functions as a device server providing network access to two RS232 serial ports, allowing for data transfer rates up to 1,000,000 baud. This device enables you to connect serial devices to a network, making them accessible remotely as if they were connected locally.
The ES-257 features two RS232 serial ports with high-speed 1Mbit/s line drivers. It supports data transfer rates up to 1,000,000 baud and includes Serial Port Tunnelling that can be individually configured for each port. The device can be accessed via TCP/IP sockets from any networked device including PCs, Android tablets, and phones, offering flexible connectivity options.
The ES-257 can be configured through a secure web interface that's accessible via any standard web browser. This interface allows you to control and configure the serial ports over your local network or the internet. For Windows users, Brainboxes provides both 32-bit and 64-bit drivers that create local COM ports, maintaining compatibility with existing software applications.
The Brainboxes ES-257 has dimensions of 4.1" width, 1.1" height, and 4.2" thickness, weighing approximately 4.44 ounces. It features a DIN Rail mountable form factor, making it suitable for industrial installations and rack mounting scenarios. The compact size allows for easy integration into existing setups while maintaining professional-grade connectivity.
While the ES-257 is primarily designed for PC platforms, it can be accessed by any device capable of TCP/IP socket communications. Windows users benefit from dedicated drivers (both 32-bit and 64-bit) that provide local COM port functionality. Other operating systems can interact with the device through TCP/IP sockets, with implementation varying by OS.
Serial Port Tunnelling in the ES-257 allows for serial cable replacement over any distance without requiring additional software. Each port can be individually configured for tunnelling, enabling direct communication between serial devices across a network. This feature effectively extends the range of serial communications beyond traditional cable limitations, making it ideal for remote device management.
The ES-257 is TAA compliant and manufactured in the United Kingdom, ensuring high quality and regulatory compliance. Its DIN Rail mountable design, robust construction, and professional-grade features like high-speed data transfer rates (up to 1,000,000 baud) and 1Mbit/s line drivers make it suitable for industrial applications. The device also offers secure configuration options and reliable network connectivity.
The Brainboxes ES-257 comes as a complete Ethernet to Serial adapter solution, including the main unit with two RS232 ports, DIN rail mounting capability, and access to necessary drivers and configuration software. Users can download the appropriate Windows drivers (32-bit or 64-bit) from Brainboxes to enable local COM port functionality.

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