The Ra-08H is a long-range, low-power LoRa module developed by Ai-Thinker, designed for LPWAN (Low-Power Wide-Area Network) applications. It is based on the ASR6601 SoC, integrating an RF transceiver, modem, and a 32-bit RISC MCU with an ARM core running at 48MHz. Supporting LoRaWAN and LinkWAN protocols, it offers robust communication capabilities for IoT, smart meters, logistics, security, and remote monitoring.
With an operating frequency range of 803–930MHz, the Ra-08H module provides high sensitivity (-138 dBm @ SF12 125kHz) and a maximum transmit power of +22 dBm, making it ideal for long-distance, low-power wireless communication.
Key Features of Ra-08H
Wide Frequency Band Support
The Ra-08H module operates within the 803MHz–930MHz spectrum, ensuring compatibility with global IoT and industrial applications.
High Sensitivity & Long-Range Communication
With a sensitivity of -138dBm @ SF12 125kHz, the module enables ultra-long-distance connectivity. It delivers a +22dBm transmission power, ensuring stable and reliable wireless communication.
Low Power Consumption
Designed for energy efficiency, the module supports multiple sleep modes, with a deep sleep current as low as 0.9µA, maximizing battery life for IoT applications. It operates at a low voltage range of 2.7V–3.6V, making it highly power-efficient.
Multiple Modulation & Protocols
The Ra-08H supports LoRa™, (G)FSK, BPSK, and (G)MSK modulation methods, offering flexibility for different communication needs. It is compatible with LoRaWAN and LinkWAN networks, allowing for seamless deployment across various applications.
Rich Peripheral Interfaces
Equipped with UART, GPIO, ADC, DAC, PWM, I2C, I2S, and SPI interfaces, the module supports enhanced integration with external devices. It features a high-speed UART rate of up to 4.6Mbps, with a default setting of 115200bps, ensuring fast and reliable data transmission.
Robust & Compact Design
Built with a compact SMD-18 package and dimensions of 16.0 × 16.0 × 3.2mm, the Ra-08H is optimized for embedded systems with space constraints. Its industrial-grade temperature tolerance (-40°C to 85°C) ensures stable performance in harsh environmental conditions.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | Ra-08H |
| Package | SMD-18 |
| Size | 16.0 × 16.0 × 3.2mm |
| Antenna | Half-hole pad / Through-hole pad / IPEX |
| Frequency | 803MHz – 930MHz |
| Operating Temp | -40°C to 85°C |
| Storage Temp | -40°C to 125°C, <90% RH |
| Power Supply | 2.7V – 3.6V, >500mA |
| Interfaces | UART, GPIO, ADC, DAC, I2C, I2S, SPI, PWM |
| I/O Pins | IO2, IO4, IO5, IO8, IO9, IO11, IO14, IO15 |
| UART Rate | 110 – 4,608,000 bps, default 115,200 bps |
| Crystal Frequency | 32MHz |
| SPI Flash | 128KB |
| Protocol Support | LoRaWAN, LinkWAN |
Pin Definition & Function
| Pin No. | Name | Function Description |
|---|---|---|
| 1, 17 | GND | Ground |
| 2 | IO8 | GPIO8 / ADC_IN1 |
| 3 | IO11 | GPIO11 / ADC_IN0 |
| 4 | IO9 | GPIO9 / DAC_OUT |
| 5 | IO4 | GPIO4 / SSP1_CLK |
| 6 | IO5 | GPIO5 / SSP1_NSS |
| 7 | SWCLK | GPIO7 / SWD_CLK |
| 8 | SWDIO | GPIO6 / SWD_DATA |
| 9 | VCC | 3.3V Power Supply, Requires >500mA |
| 10 | LPRXD | GPIO60 / LPUART-RX, Communication Serial Input |
| 11 | TXD | GPIO17 / UART TX |
| 12 | RXD0 | GPIO16 / UART RX, Debug Serial Input |
| 13 | IO15 | GPIO15 / I2C_SDA |
| 14 | IO14 | GPIO14 / I2C_SCL |
| 15 | IO2 | GPIO2 / BOOT |
| 16 | RST | External Reset, Low Active |
| 18 | ANT | Antenna Interface |
Why Choose Ra-08H?
- Ultra-Long-Range Communication with LoRaWAN and LinkWAN support.
- High Sensitivity & Low Power with -138dBm sensitivity and 0.9µA deep sleep current.
- Compact Design with SMD-18 package, ideal for embedded IoT applications.
- Rich Peripheral Interfaces supporting UART, GPIO, ADC, DAC, PWM, I2C, I2S, SPI.
- Industrial-Grade Performance, with wide temperature tolerance (-40°C to 85°C).
Applications of Ra-08H
The Ra-08H LoRa module is optimized for low-power, long-range wireless IoT applications, including:
- Smart Metering (utility metering, water, gas, and electricity tracking).
- Supply Chain & Logistics (asset tracking, fleet monitoring).
- Home Automation (smart security systems, building automation).
- Remote Sensing & Environmental Monitoring (weather stations, smart agriculture).
- Industrial IoT (predictive maintenance, industrial automation).