433MHz LoRa SX1278 RF Transceiver Module
- Product Code:
- 2018-2-694
- Availability:
- 10
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LoRa SX1278 433MHz RF Transceiver Module
Based on the Semtech SX1278 chip, this LoRa transceiver module operates in the 433 MHz frequency band, providing long-range wireless communication with low power consumption and high receiver sensitivity. Capable of stable data transmission up to approximately 5 km in open areas, the module is widely used in IoT, remote sensor networks, agricultural automation, and industrial monitoring projects.
Technical Specifications
| Specification | Value |
|---|---|
| RF Chip | Semtech SX1278 |
| Frequency Band | 433 MHz |
| Communication | SPI |
| Modulation | LoRa / FSK / GFSK / OOK |
| Max. Range | ≈ 5 km (open area) |
| Operating Voltage | 1.8 V – 3.7 V (3.3 V recommended) |
| Receiver Sensitivity | -148 dBm |
| Output Power | +20 dBm (PA_BOOST) |
| Power Consumption | Very low (sleep modes available) |
| Antenna Connection | Pad / IPEX / External antenna compatible |
Pin Connections
| Pin | Description |
|---|---|
| VCC | 3.3 V |
| GND | Ground |
| NSS / CS | SPI Chip Select |
| SCK | SPI Clock |
| MOSI | SPI Data Input |
| MISO | SPI Data Output |
| DIO0–DIO5 | Interrupt / status pins |
| RST | Reset |
| ANT | Antenna output |
ESP32 Connection Diagram
Directly compatible with ESP32 (3.3 V) – no level shifter required.
| SX1278 | ESP32 |
|---|---|
| VCC | 3.3 V |
| GND | GND |
| NSS | GPIO 5 |
| SCK | GPIO 18 |
| MOSI | GPIO 23 |
| MISO | GPIO 19 |
| RST | GPIO 14 |
| DIO0 | GPIO 26 |
Arduino UNO Connection Diagram
Arduino UNO operates at 5 V; therefore, it is recommended to use a 3.3 V regulator or level shifter.
| SX1278 | Arduino UNO |
|---|---|
| VCC | 3.3 V |
| GND | GND |
| NSS | D10 |
| SCK | D13 |
| MOSI | D11 |
| MISO | D12 |
| RST | D9 |
| DIO0 | D2 |
Package Contents
Inside the box: 1 x LoRa SX1278 433MHz RF Transceiver Module.
