LoRa is a long-range wireless communication solution. Compared to GPRS and 4G solutions, LoRa does not require a monthly network access fee and has a longer range than Wifi and Zigbee. As a result, LoRa is increasingly used in small data long-distance communication. HESL-T-001 utilizes SEMTECH's LoRa patented modulation technology, which can achieve a reception sensitivity of -142dBm and an output power of +22dBm, with an outdoor line-of-sight communication range of 5km. It features long-range, low power consumption, and strong anti-interference capabilities. HESL-T-001 is a serial port to LoRa converter, offering three types of serial interfaces: RS-232/485/422.