SX1278 LoRa Module | 433MHz Long-Range Wireless Transmission

The SX1278 LoRa Module (model RA-02) transmits wireless signals at 433 MHz and covers distances up to 15 KM in open areas. LoRa stands for Long Range, a wireless modulation (a technique for encoding data onto radio waves) technology built for sending small data packets across very long distances on very low power. The lora module connects to your microcontroller through SPI (Serial Peripheral Interface), a standard four-wire bus. The sx1278 lora module ra-02 433mhz runs on as little as 1.8V, which makes it one of the few wireless modules that works directly with LiPo cells without a regulator.

The sx1278 lora module ra 02 433mhz antenna version adds an external antenna connector that significantly improves range over the chip-only version. Sensitivity goes down to -148 dBm (decibel milliwatts, a measure of how weak a signal it can detect) — that figure is unusually low, meaning it can receive signals that most modules cannot hear at all. The honest trade-off is data rate. At maximum range the bit rate drops well below 300 Kbps. LoRa is not built for streaming video or large files. It sends small sensor payloads efficiently. High data rate and long range do not coexist on this module.

The ra 02 lora module works with Arduino IDE, PlatformIO, and MicroPython through the RadioHead or LoRa library. Engineering students, field IoT engineers, and hobbyists building long-range sensor networks use it regularly. To start, connect NSS, SCK, MOSI, MISO, and RST to your SPI pins, power from 3.3V, and run a basic transmitter sketch. StemVolt offers fast and reliable delivery of this module across India with trusted service support.

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Features:

• Communication range up to 15 KM in open area allows deploying nodes across large farm or campus areas
• Sensitivity at -148 dBm receives signals in deep indoor or obstructed environments other modules miss
• Programmable bit rate up to 300 Kbps lets you balance speed against range for each specific application
• Operating voltage from 1.8V to 3.7V allows direct powering from a single LiPo cell without regulators
• sx1278 lora module datasheet confirms 433 MHz operation within India’s license-free ISM band regulations

Technical specifications:

Applications:

• Farm sensor project uses this module to send soil moisture data from a field to a base station
• Forest fire alert system sends temperature readings over 10 KM to a remote monitoring computer
• SX1278 LoRa Module tracks livestock location across open farmland using long-range radio ping packets
• lora module sx1278 on a weather node reads temperature and humidity and sends data every 10 minutes at low bit rate

Package includes:

• 1 x SX1278 LoRa Module