LILYGO T-RS S3 ESP32-S3 RS232 RS485 Module
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LILYGO T-RS S3 ESP32-S3 RS232 RS485 Module
The LILYGO T-RS S3 ESP32-S3 RS232 RS485 Module is a powerful industrial-grade communication development board based on the dual-core ESP32-S3 XTensa LX7 MCU. With 8MB of flash memory, built-in Wi-Fi and Bluetooth 5 (LE) support, and wide input voltage (DC 7V~24V), this module is ideal for industrial IoT, automation, and serial communication applications.
Equipped with both RS232 (RSM232MT5V) and RS485 (RSM485MT5V) interfaces, the LILYGO T-RS S3 supports full-duplex high-speed communication ranging from 1200 to 256000bps, and offers 3000V isolation voltage for secure and stable data transmission.
The LILYGO T-RS S3 ESP32-S3 module is compatible with popular development platforms such as Arduino, ESP-IDF, and VS Code, making it flexible and easy to integrate into a wide range of projects. Onboard features include WS2812 LED support, Reset/Boot/IO2 buttons, and a TTL to RS232/RS485 interface—all in one compact form factor.
Whether you're building industrial control systems, data acquisition devices, or smart monitoring solutions, the LILYGO T-RS S3 ESP32-S3 RS232 RS485 Module delivers high performance, reliable connectivity, and exceptional flexibility.
Specifications
| MCU | ESP32-S3 dual-core XTensa LX7 MCU |
| Wireless | Wi-Fi / Bluetooth 5 (LE) |
| Flash | 8MB |
| Programming platform | Arduino, ESP-IDF |
| Onboard functions | WS2812(GPIO1) |
| Button | Reset+ Boot(GPIO0)+ IO2 |
| Adapt to RS232 DB9 female connector, DC input 7V~24V |
Full-duplex high-speed RS232 module
| Module Name | RSM232MT5V |
| Port | TTL/RS232 |
| lsolation voltage | 3000V |
| lsolation output | 5V/50mA 0.5W |
| Communication rate | 1200~256000bps |
Full-duplex high-speed RS485 module
| Module Name | RSM485MT5V |
| Port | TTL/RS485 |
| Isolation voltage | 3000V |
| lsolation output | 5V/50mA 0.5W |
| Communication rate | 1200~256000bps |
Sample Code For Reference [Github]
If you need technical support please check below link to find more details.
T-RS S3
Product Display
Size
Pin Diagram
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Effective Date: March 27, 2025
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