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1. Product Introduction
▫️ Key Features
Ra-02
- The Ai-Thinker LoRa series module (Ra-02) is designed and developed by Ai-Thinker Co., Ltd. This module is used for ultra-long-range spread spectrum communication. Its RF chip, SX1278, primarily employs the LoRa™ remote modem for ultra-long-range spread spectrum communication, offering strong anti-interference capabilities and minimizing current consumption.
▫️ Technical Highlights
Supports LoRa™Modem.
Supports FSK, GFSK, MSK, GMSK, LoRa™, and OOK modulation methods.
Covers the frequency band from 410 MHz to 525 MHz.
Operates at 3.3 V with a maximum output of +20 dBm and a maximum operating current of 105 mA.
Low power consumption in receive mode: 12.15 mA receive current, 1.6 mA standby current.
High sensitivity: as low as -140 dBm.
Compact dual-row stamp-hole SMD package.
Uses an SPI interface for half-duplex communication, with CRC and a packet engine supporting up to 256 bytes.
▫️ Selection Table
Type
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Parameter
| Product Image |
| Wireless Protocol |
| Chip |
| Module Flash Size (Mbits) |
| Frequency Band (MHz) |
| Package |
| Dimensions (L×W×H) (mm) |
| Operating Temp Range (℃) |
| Storage Temp Range (℃) |
| Antenna Type |
| Available GPIO |
| Min Voltage (V) |
| Max Voltage (V) |
| Typical Voltage (V) |
| Min Power Current (mA) |
| Rx Current (mA) |
| Deep Sleep Current (μA) |
| Certifications |
| Max TX Power (dBm) |
| Modulation |
2. About Modules
| Module | Datasheets | PCB Footprints |
|---|---|---|
| Ra-02 | View | Download |