The WT32-ETH01 is an embedded serial-to-Ethernet/WiFi/Bluetooth gateway module designed for IoT connectivity in applications where wireless reliability alone is not enough. Built on the ESP32 series chipset, it integrates a complete TCP/IP protocol stack with both wired Ethernet and dual-mode wireless communication, providing a dependable bridge between serial devices and modern networks .
At its core, the WT32-ETH01 combines the powerful ESP32 SoC with the LAN8720A Ethernet PHY, enabling a true dual-communication solution. This means your serial devices can connect through a stable RJ45 wired connection or through WiFi and Bluetooth, with the ability to switch between them as needed. For industrial environments where WiFi signals are prone to interference, the wired Ethernet port serves as a reliable backup, ensuring data transmission remains stable and timely .
The module supports a complete range of networking protocols and working modes. It operates as a WiFi Station, softAP, SoftAP+Station, or in P2P mode, with security mechanisms including WPA/WPA2/WPA2-Enterprise and WPS . The serial baud rate is highly flexible, supporting rates from 80 to 5,000,000 bps, making it compatible with virtually any serial device you need to connect .
For software development, the WT32-ETH01 offers multiple paths. Users can configure the module through an extensive AT command set for quick deployment, or leverage the ESP32 SDK for deeper customization and secondary development . Remote OTA firmware upgrades are supported over the network, allowing you to update deployed devices without physical access.
The module features a compact design with through-hole and half-pad compatibility, allowing it to be soldered directly onto your PCB, used with pin headers, or placed on a breadboard for prototyping . This flexibility makes it suitable for both product integration and development evaluation.
The “[Welded]” designation indicates that this version ships with pin headers already soldered in place, ready for immediate use in breadboard or jumper-wire setups.
Whether you are building an industrial IoT gateway, a smart home central controller, or a remote monitoring system, the WT32-ETH01 provides a practical, cost-effective dual-mode connectivity solution. It is suitable for individual developers and businesses purchasing in bulk for product development and deployment.
Features
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ESP32 dual-mode SoC — 2.4GHz WiFi and Bluetooth v4.2 BR/EDR + BLE in a single module
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Wired Ethernet port — RJ45 connector with 10/100Mbps auto-negotiation and cross-direct adaptive capability
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Complete TCP/IP protocol stack — Supports IPv4, TCP/UDP with transparent transmission modes
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Multiple working modes — TCP Server, TCP Client, UDP Server, UDP Client for serial data bridging
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Wide serial baud rate range — 80 to 5,000,000 bps for compatibility with diverse serial devices
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Industrial temperature range — Operates reliably from -40°C to +85°C
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Flexible form factor — Through-hole and half-pad options for PCB soldering or breadboard use
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Remote OTA firmware upgrade — Update deployed devices over the network without physical access
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Core Chipset | ESP32 series (WiFi + Bluetooth SoC) |
| 2 | Ethernet PHY | LAN8720A, RJ45 10/100Mbps auto-adaptive |
| 3 | Wireless Protocols | WiFi 802.11 b/g/n/e/i (up to 150Mbps), Bluetooth v4.2 BR/EDR + BLE |
| 4 | On-board Flash | 32Mbit (4MB) |
| 5 | Serial Baud Rate | 80 – 5,000,000 bps |
| 6 | Operating Voltage | 5V or 3.3V DC (select one) |
| 7 | Operating Current | Average 80mA; minimum supply 500mA |
| 8 | Operating Temperature | -40°C to +85°C |
