Boardoza E22-400M30S 410–493 MHz LoRa Transceiver Breakout Board

The Boardoza E22-400M30S R1.0 is a high-power LoRa communication breakout board built around Ebyte’s E22-400M30S RF transceiver module. Based on Semtech’s SX1268 radio transceiver, the board is designed for long-range wireless communication applications operating in the 410–493 MHz frequency range, including commonly used 433 MHz and 470 MHz sub-GHz bands.

The module supports both LoRa spread-spectrum and conventional GFSK modulation, providing a flexible wireless platform for long-range IoT, industrial telemetry and proprietary point-to-point communication systems. With a maximum RF output power of 30 dBm (approximately 1 W) and receiver sensitivity down to -150 dBm, the module provides a high link budget for communication in challenging environments.

Communication between the host microcontroller and the module is provided through a standard SPI interface. All essential SPI and control signals—including nCS, SCK, MOSI, MISO, BUSY, nRST, DIO1, DIO2, RXEN and TXEN—are accessible through the onboard connectors and solder pads.

The board includes an SMA antenna connector, onboard voltage-regulation circuitry, supply-selection jumper, power indicator LED and local decoupling capacitors. These features simplify integration with embedded platforms such as Arduino, ESP32, STM32, Raspberry Pi and other microcontroller-based systems.

Note: Typical instantaneous transmit current is approximately 650 mA at 30 dBm. Allow approximately 700 mA when sizing the external power supply, with current headroom and minimal voltage drop; this is supply-sizing guidance, not a separate typical-current specification. Thin wires, weak USB supplies or low-current microcontroller regulator outputs should not be used to power the board at 30 dBm.

Typical Applications

- Long-range wireless sensor networks

- Industrial telemetry systems

- Smart agriculture and irrigation control

- Environmental monitoring stations

- Wireless alarm and security systems

- Remote equipment monitoring

- Smart metering and automatic meter-reading systems

- Building automation

- Remote pump and valve control

- Wireless data-acquisition systems

- Point-to-point LoRa communication

- Proprietary LoRa star networks

- IoT gateways and field nodes

- Rural communication systems