LILYGO T3 S3 LR1121
LILYGO T3 S3 LR1121 is an ESP32-S3 development board with a Semtech LR1121 multi-band transceiver supporting sub-GHz (830–940 MHz) and 2.4 GHz LoRa, plus a 0.96" OLED display and microSD card slot.
$23.98
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Specifications
Components
Semtech LR1121 multi-band transceiver supporting sub-GHz (830–940 MHz) and 2.4 GHz LoRa bands for flexible global deployment
0.96 inch SSD1306 I2C OLED display with 128x64 resolution, connected via I2C (SDA: IO18, SCL: IO17)
Bus Interfaces
Overview
The LILYGO T3 S3 LR1121 combines the ESP32S3FH4R2 microcontroller with the Semtech LR1121 multi-band radio transceiver. The LR1121 supports both sub-GHz (830–940 MHz) and 2.4 GHz LoRa bands, making it suitable for global multi-band deployments. The board includes a 0.96" SSD1306 OLED display (128×64) via I2C, microSD card slot, and USB charging at 500mA/5V. Physical dimensions are 66×36mm. Development is supported via the LilyGo LoRa Series GitHub repository with Arduino and ESP-IDF examples.
Use Cases
5Multi-Band LoRa IoT
LoRa IoT boards supporting multiple frequency bands for global deployment flexibility.
Sub-GHz Communication
Wireless communication using sub-GHz frequencies (433/868/915 MHz) for long range and wall penetration.
2.4GHz LoRa Mesh
Mesh networking using 2.4GHz LoRa radio for short to medium range IoT sensor networks.
Global IoT Deployment
IoT devices designed for worldwide deployment supporting multiple cellular frequency bands.
Long-Range Sensor Network
Distributed sensor networks covering large areas using LoRa or cellular connectivity.
Where to Buy
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