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.

Features:

• LoRa spread spectrum achieves 15km range at -148dBm sensitivity
• ۴۳۳MHz operation gives better obstacle penetration over 868 and 915MHz
• ۱٫۸V to 3.7V suits direct LiPo battery-powered IoT node designs
• SPI interface with DIO interrupts for packet and transmission event handling
• Up to 300Kbps programmable rate covers sensor and control data

Applications:

• SX1278 LoRa Module used for 15km farm soil sensor network build
• Project uses lora module for long-range Arduino LoRa data link
• Smart city project uses sx1278 lora module arduino for node gateway
• Asset tracker uses ra 02 lora module for GPS position uplink build
• Forest monitoring uses sx1278 lora module ra 02 for vegetation coverage