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Compact metal rail-mount box with dual RJ45 ports and RS485 screw terminals

WaveShare

WaveShare 2-Ch RS485 to Ethernet Converter Industrial Isolated Serial Server

SKU CH-YBMP-3083Q

Converts two independent RS485 channels to dual Ethernet ports with Modbus and MQTT gateway support in a rail-mount metal case

  • Dual RS-485 channels operate independently for simultaneous bi-directional data transmission
  • Two RJ45 Ethernet ports support cascade topology and redundant network paths
  • Wide DC 6–45 V input via screw terminal or 5.5 mm jack
  • Onboard power and signal isolation with TVS and resettable fuse protection
  • Modbus TCP/RTU, MQTT and JSON gateway modes configurable via web browser

Dual RS485 Serial Server

This two-channel RS485-to-Ethernet converter lets industrial equipment communicate over standard networks. Each serial channel operates independently, so two separate devices can transmit data at the same time without interference. It is built for automation engineers and system integrators who need reliable Modbus or MQTT connectivity.

Rail-Mount Metal Enclosure

The compact unit fits a standard DIN rail and accepts a wide DC supply from 6 V to 45 V through either a screw terminal or a 5.5 mm jack. Dual RJ45 ports support 10/100 M auto-negotiation with 2 kV surge protection, and one port can cascade to another unit. Onboard power and signal isolation plus TVS diodes protect connected gear from transients.

Protocol Gateway Upgrade

It replaces a basic serial-to-Ethernet adapter when you need Modbus TCP, Modbus RTU over TCP, MQTT or JSON conversion in one box. The jump is worth it if your application requires multiple masters polling the same slaves, heartbeat packets, NTP time sync or configuration via web browser, host software or a device library.

Highlights

  • Dual RS-485 channels operate independently for simultaneous bi-directional data transmission
  • Two RJ45 Ethernet ports support cascade topology and redundant network paths
  • Wide DC 6–45 V input via screw terminal or 5.5 mm jack
  • Onboard power and signal isolation with TVS and resettable fuse protection
  • Modbus TCP/RTU, MQTT and JSON gateway modes configurable via web browser

Specifications

No published specifications for this item yet.

Questions about this item

What Ethernet speed does the dual RJ45 interface cap at in practice?

Each RJ45 port auto-negotiates at 10/100M, so the practical ceiling is 100 Mbps per port.

What physical mounting does the metal case require?

The unit is designed for standard DIN-rail mounting in an industrial enclosure.

How is the converter powered and what wiring step is often missed?

Connect DC 6–45 V to either the 5.5 mm jack or the screw terminal; the screw terminal polarity must be observed or the protection diode will block power.

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