We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small black rectangular box with DB9 male connector and Ethernet port

Brainboxes

Brainboxes ES-246 gender changer

SKU CH-MM4H-DCYG0 MPN ES-246

Connects one RS232 serial device to an Ethernet network at up to 1,000,000 baud with DIN-rail mounting

  • ColorBlack
  • Changer TypeEthernet to Serial
  • SpecificationsConnector: DB9 Connector - 9 Pin Male Tx FIFO Size: 256 Rx F
  • FeaturesEthernet to Serial device server providing access to one RS2
  • Connects Ethernet networks to serial equipment via integrated DB9 male connector
  • Transfers data at up to 1,000,000 baud with 256-byte Tx and 32-byte Rx FIFOs
  • Mounts on standard DIN rail in control cabinets measuring 28 mm high
  • Weighs 109 g for lightweight panel integration
  • TAA compliant for government and regulated procurement projects

One RS232 port over Ethernet

The Brainboxes ES-246 connects a single RS232 serial device to a network using a DB9 male connector. It supports data rates up to 1,000,000 baud with 256-byte transmit and 32-byte receive FIFOs. The unit is DIN-rail mountable and measures 28 mm high, 105 mm wide and 106 mm deep. It weighs 109 g and is TAA compliant.

RS232 distance and baud limits

The adapter follows the EIA-RS232 standard for operating distance, so cable length is limited by that specification rather than by Ethernet reach. Maximum baud rate is 1,000,000 with selectable data bits of 5, 6, 7 or 8. No cable is included because the connector is integrated into the housing.

Check power and mounting before ordering

Verify that your installation can supply the required power for a DIN-rail device and that the 105 mm by 106 mm footprint fits the available rail space. Ensure the DB9 male pinout matches the serial equipment you intend to connect. The product is new and supports PC, Linux and Mac platforms.

Highlights

  • Connects Ethernet networks to serial equipment via integrated DB9 male connector
  • Transfers data at up to 1,000,000 baud with 256-byte Tx and 32-byte Rx FIFOs
  • Mounts on standard DIN rail in control cabinets measuring 28 mm high
  • Weighs 109 g for lightweight panel integration
  • TAA compliant for government and regulated procurement projects

Specifications

BrandBrainboxes
ModelES-246
ColorBlack
Changer TypeEthernet to Serial
SpecificationsConnector: DB9 Connector - 9 Pin Male
Tx FIFO Size: 256
Rx FIFO Size: 32
Operating Distance: EIA - RS232 Standard
Cable: No Cable; Integrated Connector
Max Baud Rate: 1,000,000 (1 MegaBaud)
Data Bits: 5,6,7 or 8
Parity: Odd, Even, None, Mark or Space
Stop Bits: 1 or 2
Flow Control: RTS/CTS, DSR/DTR, XON/XOFF
Tx/Rx Modes: Point to Point
Power Input: 5 - 30V DC input, reverse polarity protected
Mounting Accessories 1 Description: DIN-Rail Mounting Kit - MK-048
PCB Layers: 4
Dimension: 4.09" x 4.02" x 1.10"
Weight: 0.25 lbs.
Power consumption: 0.76W
FeaturesEthernet to Serial device server providing access to one RS232 serial port. Data transfer rates up to 1,000,000 baud, coupled with 1Mbit/s line drivers deliver uncompromising performance. Our ES range provides simple instant networked serial ports. A web interface allows secure configuration and control of the serial ports over a local network or the internet using any browser. For Windows our in-house designed (32 bit and 64 bit) driver gives you local COM ports, retaining existing software applications and allowing you to connect across your network to remote devices just as if the
Shipping weight0.68 kg
Package size445 × 311 × 76 mm

Questions about this item

Should I choose the 1-port RS232 model or a multi-port version?

This ES-246 provides exactly one external RS232 serial port; multi-port requirements need a different unit.

What does the 1,000,000 baud rate mean when the adapter is installed?

It supports data transfer up to 1 MegaBaud with 1 Mbit/s line drivers, delivering full rated speed on the single DB9 port.

How does the Ethernet-to-serial interface cap real-world throughput?

The Ethernet link feeds the serial engine, so sustained throughput is limited by the 1,000,000 baud serial ceiling and the 256-byte Tx / 32-byte Rx FIFOs.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.