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Compact white industrial serial server with external antenna and RJ45 port

SMUGDESK

SMUGDESK Elfin-EW11A-0 RS485 to WiFi Serial Server

SKU CH-QHZC-V34N2

Connects RS485 serial equipment to WiFi networks with Modbus TCP conversion and wide 5-36V DC power input

  • Bidirectional RS485-to-WiFi conversion links legacy serial gear to wireless networks
  • Modbus TCP gateway translates RTU data for PLCs, sensors and meters without hardware changes
  • STA, AP and AP+STA modes give flexible network topologies for industrial sites
  • Detachable external antenna boosts signal stability in harsh workshop environments
  • Wide 5-36 V DC input suits varied industrial power supplies
  • DIN rail mounting and web-based setup simplify IoT project deployment

Compact RS485-to-WiFi gateway

The SMUGDESK Elfin-EW11A-0 is a miniaturised serial server that converts RS485 signals to wireless WiFi. It targets engineers who need to network legacy Modbus RTU sensors, PLCs, inverters or meters without rewiring. The unit includes an external antenna and a wide 5-36V DC input for industrial power environments.

Industrial integrators needing wireless Modbus

Suits automation teams upgrading wired Modbus RTU equipment to Modbus TCP over WiFi using STA, AP or AP+STA modes. Configuration is handled through a built-in web server or the vendor tool. Not for installations that require a wired Ethernet backbone, PoE power, or any protocol other than Modbus TCP.

Handles one RS485 link at 5-36V

Comfortably bridges a single RS485 device to a wireless LAN with the supplied antenna. The 5-36V range covers common industrial supplies. Headroom ends at one serial port and one wireless interface; multi-port aggregation, redundant radios or higher-voltage feeds are not supported.

How it compares

Measured against everything we stock in Serial & USB Device Servers, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 98% of the 168 comparable items (median $335.99).

Specifications

No published specifications for this item yet.

Questions about this item

What serial interface must my existing device have to connect to the Elfin-EW11A-0?

Your device must provide an RS485 serial port, because the server converts RS485 signals to WiFi.

Can I keep my 5 V DC power supply when installing this unit?

Yes, the server accepts a wide 5-36 V DC input, so a 5 V source is within range.

How do I verify the wireless link is active after mounting the server?

Check the external WiFi antenna connection and confirm the web configuration page shows a stable STA or AP mode status.

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