Description-
Ra-08 is an LoRa module designed and developed by Shenzhen Ai-Thinker Technology Co., Ltd. The module is used for ultra-long distance spread spectrum communications. Its chip
ASR6601 is a universal LPWAN wireless communication SOC, integrated with RF
transceivers, modems, and a 32-bit RISC MCU. The MCU adopts an ARM core with a
working frequency of 48MHz. The Ra-08 module supports LoRa modulation and traditional (G)
FSK modulation under the LPWAN. At the same time, the transmitter also supports BPSK
modulation and (G) MSK modulation, receiver support (G) MSK modulation. The Ra-08 module provides long-range and ultra-low power communications for LPWAN
applications, which can be widely used in smart meters, supply chain and logistics, home
building automation, security system, remote irrigation system and other scenes 
Features-
• Adopt SMD-18 package
• Support frequency: 410MHz-525MHz
• Working voltage is 3.3V, theoretical maximum transmit power: +22dBm
• High sensitivity: -138dBm @125Kz SF12
• Support spread spectrum factor: SF5/SF6/SF7/SF8/SF9/SF10/SF11/SF12
• Embedded memory, 128KB FLASH,16KB SRAM
• Support LoRa/(G)FSK/BPSK/(G)MSK modulation
• Antenna interface is compatible with stamp holes / circular holes and IPEX, etc., support
more option selection
• Support multiple sleep modes: depth sleep current is
Pin definition
Ra-08 has a total of 18 interfaces. As shown in below pin diagram, the pin function definition
table is the interface de
Specification-
Model : Ra-08
Package : SMD-18
Size : 16.0*16.0*3.2(±0.2)mm
Antenna : half-hole pad / through-hole pad / IPEX
Frequency : 410-525MHz
Operating temperature : -40 °C ~ 85 °C
Storage temperature : -40 °C ~ 125 °C, < 90%RH
Power supply Voltage : 2.7V ~ 3.6V, Current >500mA
Interface : UART/GPIO/ADC/DAC/I2C/I2S/SPI/PWM
IO : IO2,IO4,IO5,IO8,IO9,IO11,IO14,IO15
UART Rate : Support 110 ~ 4608000 bps, Default 115200 bps
Crystal frequency : 32MHz
SPI Flash : 128KB
Transfer Protocol : LoRaWAN, LinkWA
Package Include–
1 X Ai-Thinker RA-08 LoRa Module
Ai-Thinker RA-08 LoRa Module Overview
The Ai-Thinker RA-08 LoRa Module is a compact SMD-18 wireless transceiver designed for ultra-long-range communication in the 410–525 MHz band. Powered by the ASR6601 LPWAN SOC with an integrated 48 MHz ARM MCU, it supports LoRa, FSK, BPSK and MSK modulations for robust, low-power networking.
Key Features of Ai-Thinker RA-08 LoRa Module
- Wide frequency range (410–525 MHz) for regional compliance and flexible deployment
- Integrated ASR6601 SOC with 32-bit ARM core at 48 MHz for on-board processing
- Multiple interfaces (UART, SPI, I2C, I2S, ADC, DAC, PWM, GPIO) for versatile sensor and peripheral integration
- Supports LoRa, (G)FSK, BPSK and (G)MSK modulations for reliable long-distance links
- Operating temperature of –40 °C to 85 °C for industrial and harsh-environment applications
- Genuine product shipped fast from Zbotic with order processing within 24 hours
Applications and Use Cases
- Smart metering networks transmitting consumption data over kilometers
- Supply chain and logistics tracking for asset monitoring in wide areas
- Home and building automation sensors for remote control of lights and HVAC
- Environmental monitoring stations reporting temperature, humidity and air quality
- Security and alarm systems requiring low-power, long-range signaling
How to Use Ai-Thinker RA-08 LoRa Module
Mount the RA-08 on a 0.8 mm pitch PCB footprint and connect its power pins to a stable 2.7–3.6 V supply with ≥500 mA capability. Interface via UART (default 115 200 bps) or SPI/I2C to send AT commands or custom firmware. Attach a matching antenna to the half-hole pad or IPEX connector, configure frequency and spreading factor in software, then begin LoRa packet transmission for long-range links.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Which modulation schemes does the RA-08 support?
The RA-08 supports LoRa modulation along with (G)FSK, BPSK and (G)MSK, allowing you to choose the best balance of range, speed and power consumption for your application.
How do I power and interface with this module?
Supply the RA-08 with 2.7–3.6 V DC (≥500 mA) and use its UART interface (default 115 200 bps) or optional SPI/I2C lines to send commands or stream data. GPIO, ADC, DAC and PWM pins are available for external sensors and control signals.
Can the RA-08 operate outdoors in extreme temperatures?
Yes, the module is rated for operating temperatures from –40 °C to 85 °C and can withstand storage conditions up to 125 °C (≤90% RH), making it suitable for harsh industrial and outdoor deployments.
Technical Specifications
| Brand | Ai- Thinker |
|---|---|
| Model | RA-08 |
| Interface / Protocol | LoRa |
| SKU | AI5671 |
| Weight | 0.0052 kg |
| Availability | In Stock |
Applications & Use Cases
The Ai-Thinker RA-08 LoRa Module is a versatile ai thinker esp modules used across a wide range of applications including WiFi-enabled IoT devices, smart home sensors, web servers, mesh networks, and wireless data logging.
Common use cases:
- Connecting an Arduino project to WiFi
- Building a smart plug or switch
- Creating a wireless sensor network
This product is ideal for IoT developers, home automation enthusiasts, and embedded engineers.
Technical Tip: ESP32 supports both WiFi and Bluetooth. ESP8266 is WiFi-only but more affordable. Both are programmable via Arduino IDE or ESP-IDF.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine Ai- Thinker product sourced from authorized channels
Arnav Khurana –
Average Ai-Thinker RA-08 LoRa. WiFi drops occasionally but works for basic projects.
Lakshmi Sethi (verified owner) –
Excellent Ai-Thinker RA-08 LoRa! WiFi connectivity is strong and stable. Perfect for IoT projects.
Ayush Vyas (verified owner) –
Great Ai-Thinker RA-08 LoRa. OTA updates work perfectly. Using 5 of these around my house.
Chetan Shah –
Love this Ai-Thinker RA-08 LoRa. Built a smart switch with it. Works with Home Assistant perfectly.
Kavya Nayak (verified owner) –
Love this Ai-Thinker RA-08 LoRa. Built a smart switch with it. Works with Home Assistant perfectly.
Saurabh Kapoor (verified owner) –
Good Ai-Thinker RA-08 LoRa. WiFi works well. Sometimes needs a reset but overall solid.
Ankit Menon (verified owner) –
Good quality Ai-Thinker RA-08 LoRa. Flash memory is sufficient for most projects.
Anjali Sethi (verified owner) –
This Ai-Thinker RA-08 LoRa is a beast for the price. Running a web server on it with no issues.
Divyansh Bhatt (verified owner) –
This Ai-Thinker RA-08 LoRa is amazing for home automation. Connected all my smart devices easily.
Yash Panchal (verified owner) –
This Ai-Thinker RA-08 LoRa is a beast for the price. Running a web server on it with no issues.
Lakshmi Dhillon (verified owner) –
This Ai-Thinker RA-08 LoRa is a beast for the price. Running a web server on it with no issues.
Prashant Trivedi (verified owner) –
Excellent for smart home projects. This Ai-Thinker RA-08 LoRa connects reliably to my router.
Jai Mittal (verified owner) –
Good quality Ai-Thinker RA-08 LoRa. Flash memory is sufficient for most projects.
Riya Deshpande –
Great quality Ai-Thinker RA-08 LoRa. Flashed with ESPHome and it works beautifully.
Shubham Sharma (verified owner) –
Perfect for my IoT project. This Ai-Thinker RA-08 LoRa has excellent WiFi performance.
Uday Khurana (verified owner) –
Outstanding Ai-Thinker RA-08 LoRa! Programmed it with Arduino IDE. All features work as documented.
Devansh Shetty (verified owner) –
Perfect for my IoT project. This Ai-Thinker RA-08 LoRa has excellent WiFi performance.
Varun Sen –
Excellent Ai-Thinker RA-08 LoRa! WiFi connectivity is strong and stable. Perfect for IoT projects.
Raghav Kamath (verified owner) –
This Ai-Thinker RA-08 LoRa is a beast for the price. Running a web server on it with no issues.
Aditi Verma (verified owner) –
Great quality Ai-Thinker RA-08 LoRa. Flashed with ESPHome and it works beautifully.
Riya Bhatt (verified owner) –
Perfect for my IoT project. This Ai-Thinker RA-08 LoRa has excellent WiFi performance.
Suresh Srivastava –
This Ai-Thinker RA-08 LoRa is amazing for home automation. Connected all my smart devices easily.
Lalit Arora (verified owner) –
This Ai-Thinker RA-08 LoRa is a beast for the price. Running a web server on it with no issues.
Himanshu Rao (verified owner) –
Excellent Ai-Thinker RA-08 LoRa! WiFi connectivity is strong and stable. Perfect for IoT projects.
Vikram Grewal (verified owner) –
Love this Ai-Thinker RA-08 LoRa. Built a smart switch with it. Works with Home Assistant perfectly.
Krishna Rao –
Great quality Ai-Thinker RA-08 LoRa. Flashed with ESPHome and it works beautifully.
Priya Krishnan (verified owner) –
Nice Ai-Thinker RA-08 LoRa for IoT prototyping. Breadboard compatible which is a plus.
Naveen Bhat (verified owner) –
Good Ai-Thinker RA-08 LoRa. WiFi works well. Sometimes needs a reset but overall solid.
Isha Agarwal (verified owner) –
Outstanding Ai-Thinker RA-08 LoRa! Programmed it with Arduino IDE. All features work as documented.