Hat CBack NBIoT-CN is an NB-IoT communication module compatible with the M5StickC/C Plus series. It features a built-in SIM7020C module that covers the Cat-NB frequency bands in China. It integrates an SMA external antenna interface to enhance device communication quality and signal stability. It supports various common IoT communication protocols (MQTT, HTTP, CoAP, etc.), making it suitable for applications in various low-latency, low-throughput scenarios.
