Ai Thinker LoRa Series Ra-02 Spread Spectrum Wireless Module

Ai Thinker LoRa Series Ra-02 Spread Spectrum Wireless Module

The Ai Thinker RA-02 LoRa Module is a high-performance long-range wireless communication module based on LoRa (Long Range) spread spectrum technology. It operates in the 433/868/915 MHz frequency bands and provides low-power, long-distance data transmission, making it ideal for IoT (Internet of Things), smart city, and industrial wireless applications.

The module uses the Semtech SX1278/SX1276 chip, which integrates LoRa modulation technology to achieve long-distance communication with low power consumption. With an SPI interface, it can be easily interfaced with microcontrollers like Arduino, STM32, Raspberry Pi, and other embedded systems.

The RA-02 is compact, lightweight, and designed for reliable wireless networking in harsh environments, enabling remote sensing, data acquisition, and telemetry systems.

Click here to view related products

Features:

• Frequency Range: 433MHz / 868MHz / 915MHz (depending on variant)
• Modulation: LoRa spread spectrum
• Chipset: Semtech SX1278 / SX1276
• Output Power: Up to +20dBm (depending on hardware and configuration)
• Sensitivity: Up to -137 dBm (LoRa mode)
• Communication Interface: SPI
• Operating Voltage: 1.8V – 3.7V (recommended 3.3V)
• Data Rate: 0.3 kbps – 37.5 kbps
• Antenna Interface: External antenna pin (SMA/connector)
• Low Power Consumption: Sleep mode supported (<10 ?A)
• Operating Temperature: -40°C to +85°C
• Dimensions: ~32mm × 17mm × 3mm

Advantages:

• Long-range communication up to 5–10 km (line of sight)
• Ultra-low power consumption for battery-powered IoT devices
• Highly resistant to interference due to spread spectrum technology
• Easy integration with Arduino, STM32, Raspberry Pi, and other MCUs
• Compact and durable design for industrial and outdoor environments

Applications:

• IoT Networks: Smart meters, home automation, and sensor networks
• Industrial IoT: Remote monitoring, equipment control, and telemetry
• Smart Agriculture: Wireless soil moisture, temperature, and environmental sensors
• Smart Cities: Street lighting, parking management, and environmental monitoring
• Remote Control & Robotics: Long-distance wireless device control
• Wireless Data Transmission: Low-bandwidth telemetry over long distances