Ai-Thinker Ra-01SCH-P LoRa Module

The Ai-Thinker Ra-01SCH-P LoRa Module is a high-power long-range wireless communication module designed for reliable data transmission over extended distances. Developed by Shenzhen Ai-Thinker, the module is based on the LLCC68+ RF chip and uses LoRa spread-spectrum modulation to provide high receiver sensitivity, strong interference resistance, and long-range communication for embedded and IoT applications.

The module operates across the 803–930 MHz frequency band, making it suitable for applications requiring sub-GHz wireless communication. It supports LoRa, FSK, and GFSK modulation, providing flexibility for different wireless communication requirements. LoRa modulation is particularly useful when long communication range, receiver sensitivity, and robustness are more important than high data throughput.

One of the main advantages of the Ra-01SCH-P is its integrated high-power RF architecture. In the default configuration, its internal power amplifier operates from a 3.3V supply and can provide up to +29 dBm transmit power, with an operating current of approximately 750 mA at maximum output. An optional configuration allows the internal PA to operate from 5V and reach up to +31 dBm, with current consumption increasing to approximately 1 A.

The module provides high receiver sensitivity of up to -137 dBm at SF10 and 125 kHz bandwidth, helping maintain communication in challenging RF environments. It supports LoRa spreading factors SF5 through SF11, allowing designers to balance data rate, sensitivity, and communication range according to the application.

Communication with the host microcontroller is handled through an SPI interface using half-duplex communication. The module also includes CRC functionality and a packet engine capable of handling data packets up to 256 bytes. This makes it suitable for integration with microcontrollers and embedded platforms used in industrial, agricultural, automation, and IoT systems.

The Ra-01SCH-P uses a compact 17 × 16 × 3.2 mm dual-row stamp-hole SMD package. Its antenna interface supports multiple installation approaches, including half-hole pads, through-hole pads, and IPEX-compatible configurations, giving PCB designers flexibility when developing the RF section of a product.

Typical applications include remote meter reading, smart-home and building automation, security systems, remote irrigation, industrial monitoring, telemetry, and other long-range wireless communication systems. The high transmit power and sensitivity make the module particularly suitable for applications where reliable sub-GHz communication is required over extended distances.

Features

• Ai-Thinker high-power LoRa communication module

• Based on LLCC68+ RF technology

• 803–930 MHz operating frequency band

• Supports LoRa, FSK, and GFSK modulation

• Up to +29 dBm transmit power in default configuration

• Optional configuration up to +31 dBm

• Receiver sensitivity down to -137 dBm

• Supports LoRa spreading factors SF5–SF11

• SPI half-duplex communication interface

• CRC and 256-byte packet engine

• Compact 17 × 16 mm SMD package

• Multiple antenna connection options

Specifications

*The default configuration uses a 3.3V internal PA supply and reaches up to +29 dBm at approximately 750 mA. An optional 5V PA configuration can reach +31 dBm at approximately 1 A.

Applications

• Long-range IoT communication

• Industrial wireless monitoring

• Remote meter reading

• Smart-home and building automation

• Remote irrigation systems

• Agricultural monitoring

• Security and alarm systems

• Wireless telemetry

• Industrial automation

• Sensor networks

• Remote equipment monitoring

• Embedded wireless communication