The RA-02 SX1278 LoRa Module (Neutral Packing) is a high-performance wireless communication solution optimized for the 433MHz frequency band. As of 2026, it remains a cornerstone for long-range IoT development due to its balance of power efficiency and signal penetration. This “Neutral Packing” version is ideal for business bulk purchasing, white-labeling, or educational use.
Long Product Description
The RA-02 is a LoRa (Long Range) transceiver module based on the Semtech SX1278 RF chip, designed and manufactured by Ai-Thinker. It utilizes spread-spectrum communication technology to achieve extreme distances—exceeding 10km in line-of-sight—while maintaining immunity to local interference.
Unlike standard Bluetooth or Wi-Fi, the RA-02 is engineered specifically for “low-bitrate, long-distance” data transmission, such as remote sensor reading, agricultural monitoring, and off-grid communication. The module features an integrated IPEX (U.FL) antenna connector, allowing for easy connection to external high-gain antennas via pigtail cables. Its compact SMD footprint and shielded housing make it robust for industrial environments, while the neutral packaging ensures a cost-effective solution for large-scale deployments and commercial integration.
Key Features
- Advanced LoRa™ Modulation: High interference immunity and stable communication even in congested RF environments.
- Extended Range: Capable of 10km+ range in open environments with appropriate antenna setups.
- IPEX/U.FL Connector: Provides a secure, professional interface for external antennas, essential for metal enclosures or specialized mounting.
- Ultra-Low Power Consumption: Deep sleep current as low as 0.2uA, ideal for battery-powered devices that need to last for years.
- Intelligent Packet Handling: Supports automatic CRC hardware detection and a 256-byte payload FIFO.
- Broad Compatibility: Operates via a standard SPI interface, supported by most microcontrollers including Arduino, ESP32, STM32, and Raspberry Pi.
