ARENTI 2 in 1 Accessory SX1280 2.4GHz Dual Antenna LoRa Module

ARENTI SX1280 LoRa Module for IoT Development

This 2.4 GHz wireless transceiver combines the Semtech SX1280 chip with a Skyworks SE2431L front-end for long-range spread-spectrum communication. It targets engineers and hobbyists building custom Internet of Things nodes that require time-of-flight ranging and dual-antenna diversity. The board ships without a microcontroller, so firmware development is left entirely to the integrator. Its compact footprint suits embedded designs where space and power budget are tight.

22 dBm Output and −134 dBm Sensitivity Define Range

At 22 dBm transmit power and a receive sensitivity of −134 dBm the module achieves line-of-sight links of two to four kilometres in open terrain. The link budget supports LoRa, FLRC, FSK and GFSK modulation, giving flexibility to trade data rate for distance. Battery-operated sensors benefit from the 2.0 V to 3.7 V supply range, but the radio will not suit applications that demand higher output power or operation outside the 2.4 GHz ISM band.

SPI Interface and 2.4 GHz Band Set Integration

An SPI bus provides direct connection to most microcontrollers, simplifying software integration for ranging and data payloads. Because the radio occupies the 2.4 GHz spectrum it shares spectrum with Wi-Fi and Bluetooth devices, so dense environments may reduce reliable throughput. The lack of an on-board MCU means every protocol layer, duty-cycle management and antenna-switching logic must be implemented in host firmware. Developers needing a complete stack or sub-GHz operation should evaluate alternative platforms.