AI-THINKER SX1278 RF Wireless Transceiver LoRa Module (RA-02)

The AI-THINKER RA-02 is a high-performance LoRa (Long Range) RF wireless transceiver module based on the Semtech SX1278 chip. It operates in the 433 MHz ISM band and is designed for ultra-long-range, low-power wireless communication.

Thanks to LoRa spread spectrum technology, the RA-02 offers exceptional sensitivity, strong anti-interference capability, and long transmission distance, making it ideal for IoT, smart sensing, and remote monitoring applications. The module supports both LoRa modulation and FSK/OOK, providing flexibility for different wireless designs.

Key Features

• Based on Semtech SX1278 LoRa transceiver

• Operating frequency: 410–525 MHz (433 MHz typical)

• Ultra-long communication range (up to 10 km line-of-sight)

• High receiver sensitivity: up to –148 dBm

• Supports LoRa, FSK, and OOK modulation

• Low power consumption, ideal for battery-powered devices

• SPI interface for easy integration

• Compact size with external antenna support

• Strong anti-interference performance

Technical Specifications

• Chipset: SX1278

• Frequency Range: 410–525 MHz

• Operating Voltage: 1.8V – 3.7V (3.3V recommended)

• Transmit Power: Up to +20 dBm

• Modulation: LoRa / FSK / OOK

• Interface: SPI

• Operating Temperature: –40°C to +85°C

• Antenna Type: IPEX / SMD pad (varies by version)

Applications

• IoT (Internet of Things) devices

• Smart agriculture & environmental monitoring

• Wireless sensor networks

• Smart meters (water, gas, electricity)

• Home automation

• Industrial monitoring and control

• Remote data transmission systems

• DIY LoRa & Arduino projects

Package Includes

• 1 × AI-THINKER RA-02 SX1278 LoRa Module

(Antenna and headers not included unless specified)

Why Choose RA-02?

• Proven reliability for long-range communication

• Ideal for low-power and low-data-rate applications

• Widely supported by Arduino, ESP32, and STM32 platforms

• Cost-effective LoRa solution for commercial and DIY projects