Skip to Content
★ 4.9★ Rated by 750+ Customers on Google
🚀 Startup India Recognized Company
🚚 Pan India Delivery via Trusted Courier Partners
🏬 Only Physical + Online Robotics Store in Pimpri
🎓 Trusted by Engineering Students, Makers & Innovators Across India
★ 4.9★ Rated by 750+ Customers on Google
🚀 Startup India Recognized Company
🚚 Pan India Delivery via Trusted Courier Partners
🏬 Only Physical + Online Robotics Store in Pimpri
🎓 Trusted by Engineering Students, Makers & Innovators Across India
  1. All products
  2. 🧠 Controllers & Systems
  3. 📡 Sensors & Modules
  4. Ra-02 SX1278 LoRa 433MHz Module - Long Range SPI Transceiver with IPEX
  5. 📡 Sensors & Modules
Pricelist: Retail Price (B2C) Pricelist
Pricelist: Retail Price (B2C) Pricelist
Ra-02 SX1278 LoRa 433MHz Module - Long Range SPI Transceiver with IPEX

Ra-02 SX1278 LoRa 433MHz Module - Long Range SPI Transceiver with IPEX

ParameterDetailed Specification
Main ChipAI-Thinker Ra-02 (Semtech SX1278)
Frequency Range433MHz (ISM Band)
Modulation ModeLoRa / FSK / GFSK / MSK / GMSK / OOK
Max Range10km+ (Line of Sight / Low Data Rate)
Operating Voltage2.5V to 3.7V DC (3.3V Recommended)
Transmit Power+20dBm - 100mW (Constant RF output)
SensitivityDown to -148dBm
CommunicationSPI Interface (Up to 10Mbps)
                                 Price

🚚 Ships within 24 Hours
📦 Pan India Delivery
₹ 372.88 ₹ 372.88
(Tax included)

Barcode: 59301

Product Description

Unlock ultra-long-distance communication for your IoT projects with the Ra-02 SX1278 LoRa Module. Based on Semtech's revolutionary LoRa (Long Range) spread spectrum technology, this module excels in low-power, wide-area network (LPWAN) applications where standard WiFi or Bluetooth fail. At Robogears, we recommend the Ra-02 for its incredible interference immunity and its ability to transmit data through thick walls and urban obstacles. The module features an IPEX/U.FL connector for external antennas, allowing you to customize your range based on your environment. Whether you are building a rural weather station or a smart city sensor network at your Pimpri facility, the Ra-02 provides the most reliable long-range wireless link available for the 433MHz band.

Detailed Key Features

  • LoRa Spread Spectrum Modulation: Provides significantly longer range than traditional FSK or OOK modulation by utilizing a unique frequency-chirp technique.

  • Extreme Sensitivity: Capable of receiving signals even when they are below the noise floor, ensuring high reliability in noisy industrial environments.

  • Low Power Consumption: Designed for battery-operated devices, with a sleep current as low as 0.2uA, allowing for years of operation on a single LiPo cell.

  • Half-Duplex SPI Communication: Easily integrates with Arduino, STM32, and Raspberry Pi using only 4 signal pins.

  • Integrated Hardware Features: Includes a built-in bit correlator for detection, 127dB Dynamic Range RSSI, and automatic RF sense and CAD (Channel Activity Detection).

All Technical Details

  • Pin Definition:

    • 3.3V/GND: Power Input.

    • SCK/MISO/MOSI/NSS: SPI interface.

    • RST: Reset pin.

    • DIO0-DIO5: Digital I/O (Interrupts for Rx/Tx/Timeout).

  • Packet Engine: Supports CRC up to 256 bytes for error-free data transmission.

  • Modem Bandwidth: Programmable from 7.8kHz to 500kHz.

  • Applications: Automated meter reading, home and building automation, wireless alarm and security systems, and industrial monitoring.

Prototyping & Engineering Tips (Robogears Exclusive)

  • Never Power Without Antenna: At our Pimpri workshop, we always warn makers: Do not power the module without the antenna connected. Transmitting without a load (antenna) can cause reflected power to burn out the SX1278's internal power amplifier.

  • The 3.3V Logic Rule: The Ra-02 is a strictly 3.3V device. If you are using an Arduino Uno (5V), you must use a logic level shifter on the SPI lines and a dedicated 3.3V regulator, as the Arduino's 3.3V pin may not provide enough current during peak transmission.

  • Antenna Placement: For maximum range, mount your 433MHz antenna vertically and as high as possible. Keep the antenna away from large metal surfaces to prevent signal detuning.

  • Frequency Tuning: Ensure you are using the correct library settings for the 433MHz band. Using 868MHz or 915MHz software settings on this 433MHz hardware will result in extremely poor range and potential hardware damage.

Package Includes

  • 1 x Ra-02 SX1278 LoRa Module (433MHz)

  • 1 x 433MHz Spring Antenna (or IPEX to SMA Pigtail depending on the bundle)

Image Disclaimer

Product images are shown for illustrative purposes only. The color of the PCB (typically Blue or Black) or the specific marking on the metal shielding can may vary between batches, but the Ra-02 433MHz LoRa performance remains as described.

🔒
Secure Payment
100% Safe & Encrypted
🚚
Dispatch in 24 Hours
Fast Order Processing
⭐
4.9★ Google Rating
Rated by 750+ Customers
🇮🇳
Pan India Delivery
Startup India Recognized Company

Trusted by thousands of students and engineers across India

★★★★★ Rated 4.9/5 by 750+ customers on Google
★★★★★

Best place I discovered recently. Got all my components and the staff is also very good and polite.

— Swayam Thorat

★★★★★

Good with you can get whatever you want at low price.

— Ganesh Deshmukh

★★★★★

Shopping for innovative components is always a pleasure here. The staff is knowledgeable and eager to help. Prices are very fair.

— Papai Das

★★★★★

I love the STEM kits they offer for students. It's a great way to inspire young minds and promote creativity. The staff is supportive and knowledgeable.

— Ayush Chauhan

★★★★★

Great experience shopping here. Good product selection and excellent customer support.

— Rahul Sonawane

★★★★★

Wide range of robotics and electronics components available. Perfect place for project requirements and learning kits.

— Verified Google Customer

★★★★★

Excellent service, genuine products and quick support. Highly recommended for students, hobbyists and engineers.

— Verified Google Customer