WT32-ETH01 Embedded Serial-to-WiFi & Bluetooth Gateway Module – Dual-Mode IoT Connectivity Solution [Welded]

SKU: FA1092-1
Microcontroller

ESP32-D0WDQ6 (Dual-core)
Ethernet PHY

LAN8720A (10/100 Mbps)
Wireless Frequency

2.4GHz – 2.5GHz
Operating Voltage

3.3V or 5.0V (Supports dual power input)
Operating Current

Average: 80mA
Network Protocols

IPv4, TCP/UDP, HTTP, MQTT, FTP
Serial Baud Rate

80 – 5,000,000 bps
Operating Temperature

-40°C to +85°C (Industrial Grade)
Dimensions

60mm x 25.4mm x 15mm
The WT32-ETH01 is an integrated embedded serial-to-Ethernet gateway module based on the ESP32 series. It provides a seamless bridge between serial devices, Wi-Fi, Bluetooth, and wired Ethernet, making it an essential component for industrial IoT and smart gateway applications in 2026. 
Long Description
The WT32-ETH01 is a specialized development board designed for high-reliability IoT networking. By combining the powerful ESP32-D0WDQ6 dual-core processor with an onboard LAN8720A Ethernet physical layer transceiver, this module allows users to connect hardware to the internet via Wi-Fi, Bluetooth (Classic and BLE), or a stable wired RJ45 connection. 
This version comes pre-welded (soldered headers), ensuring it is ready for immediate use in breadboards or integration into custom PCBs. It is particularly valued by engineers and business purchasers for its “serial-to-network” capability, where it can be configured to transparently transmit data from a legacy UART serial device to a remote server via TCP/IP or UDP. Its compact size and optimized power consumption make it ideal for building automation, remote monitoring, and industrial sensor hubs. 
Key Features
  • Triple Connectivity: Supports Wi-Fi (802.11 b/g/n), Bluetooth v4.2 BR/EDR & BLE, and 10/100 Mbps wired Ethernet.
  • Optimized Processor: Powered by the ESP32 dual-core Xtensa® 32-bit LX6 MCU, operating at up to 240 MHz.
  • Transparent Transmission: Built-in support for firmware that allows AT command configuration for serial-to-Ethernet or serial-to-WiFi data pass-through.
  • Pre-Welded Design: Includes high-quality soldered pin headers for easy prototyping and secure mounting.
  • Advanced Security: Supports WPA/WPA2/WPA2-Enterprise and AES/RSA/ECC/SHA hardware acceleration for secure data transmission.
  • Versatile Protocol Support: Full TCP/IP stack integrated, supporting TCP Server, TCP Client, UDP Server, and UDP Client modes
Usage Instructions
  1. Hardware Connection: Power the module via the 5V or 3V3 pins. For wired internet, connect a standard Cat5/Cat6 cable to the RJ45 port.
  2. Configuration: The module often comes pre-flashed with an AT command firmware. Connect the UART pins (TX/RX) to a PC via a USB-to-TTL adapter to configure network settings and baud rates.
  3. Firmware Development: For custom logic, the board is fully compatible with the ESP-IDF, Arduino IDE, and MicroPython. When programming in Arduino, select “ESP32 Dev Module” and ensure the Ethernet pins are correctly defined for the LAN8720 (specifically GPIO 17 for the clock).
  4. Network Modes: Configure the device as a “Gateway” to bridge local Bluetooth sensors to a cloud server via the wired Ethernet port for maximum stability.
  5. Mounting: Utilize the pre-welded pins to plug the module directly into a motherboard or an expansion shield
Q: Can I use Wi-Fi and Ethernet at the same time?

Yes, the ESP32 chip is capable of managing both network interfaces simultaneously. You can use one as a primary connection and the other as a fallback/redundancy link

Q: Does the module support Power over Ethernet (PoE)?

No, the WT32-ETH01 does not natively support PoE. It must be powered via the pin headers (5V or 3.3V). To use PoE, an external PoE splitter or extraction module is required

Q: Why is my serial monitor showing gibberish?

Ensure your baud rate matches the module’s default (usually 115200 bps). Also, check that the logic levels of your USB-to-TTL converter match the module’s 3.3V logic

Q: Is this module suitable for industrial environments?

Yes. With an operating temperature range of -40°C to +85°C and the stability of a wired Ethernet connection, it is designed for 24/7 industrial monitoring and gateway applications.

Q: Can I update the firmware OTA (Over-the-Air)?

Absolutely. The module supports OTA updates via Wi-Fi or Ethernet, allowing for remote maintenance and feature updates without physical access to the device

Q: Are volume discounts available for B2B/Business customers?

Yes. We provide tiered pricing for bulk purchases and can provide technical documentation for integration into commercial products. Please contact our sales team for a custom quote.

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