SX1278 LoRa RA-02 433MHz Wireless Transceiver Module

The SX1278 LoRa RA-02 433MHz Wireless Transceiver Module is a long-range communication module designed for IoT, wireless sensor networks, and embedded systems. Based on the Semtech SX1278 RF chip, this module uses advanced LoRa spread spectrum technology to achieve reliable long-distance wireless communication with low power consumption.

The module operates in the 433MHz frequency band and supports communication distances of up to 10–15 kilometers in open environments, depending on antenna, power supply, and environmental conditions. With a high receiver sensitivity of –148 dBm and a transmission power of up to +20 dBm, the SX1278 LoRa module provides stable communication even in noisy or interference-prone environments.

Unlike traditional RF communication methods, LoRa modulation technology provides better immunity to interference while maintaining long communication distances with minimal power usage. This makes the module suitable for smart city networks, remote monitoring, wireless sensor nodes, and industrial IoT applications.

The module communicates with microcontrollers through an SPI interface, making it compatible with development platforms such as Arduino, ESP32, Raspberry Pi, and STM32 boards. The RA-02 module also includes a shielded RF design for improved signal stability and reduced interference.

Because of its long range, high reliability, and low energy consumption, the SX1278 LoRa module is widely used in smart metering systems, home automation networks, wireless alarm systems, environmental monitoring stations, and IoT communication projects.

Note: For Arduino projects, the required LoRa library must be installed in the Arduino IDE before programming.

Key Features

• Based on Semtech SX1278 LoRa RF transceiver chip
• Operates in 433 MHz frequency band
• Long-range communication up to 10–15 km (open area)
• High receiver sensitivity: –148 dBm
• Programmable data rate up to 300 kbps
• Maximum RF output power: +20 dBm
• LoRa spread spectrum modulation technology
• Strong anti-interference capability
• Supports multiple modulation modes: LoRa, FSK, GFSK, MSK, GMSK and OOK
• Half-duplex SPI communication interface
• Shielded RF design for improved signal stability

Technical Specifications

Chipset: SX1278
Operating Frequency: 433 MHz
Communication Distance: Up to 10–15 km (open area)
Receiver Sensitivity: −148 dBm
Maximum Output Power: +20 dBm (100 mW)
Interface: SPI
Data Rate: Up to 300 kbps
Modulation Modes: LoRa, FSK, GFSK, MSK, GMSK, OOK
RF Signal Detection: Automatic with CAD mode
RSSI Dynamic Range: 127 dB
Packet Engine: Supports CRC up to 256 bytes

Applications

• Long-range IoT communication
• Wireless sensor networks
• Smart city infrastructure
• Smart meter reading systems
• Home automation systems
• Wireless alarm and security systems
• Environmental monitoring systems
• Industrial automation communication
• Remote data logging systems

Package Includes

1 × SX1278 LoRa RA-02 433MHz Wireless Module