The SIM7028 NB-IoT HAT is a small size, low-power, and powerful Raspberry Pi HAT with NB-IoT (Narrow-Band Internet of Things) function, supports global band and supports TCP, UDP, LWM2M, COAP, DTLS, DNS, NTP, PING, HTTP (S), MQTT (S), TLS/SSL, etc.; with 40PIN GPIO extension header, compatible with Raspberry Pi series boards, Jetson Nano, etc.; Onboard Type-C interface for software debugging. Onboard UART control pins, compatible withArduino/STM32.; Onboard USB to UART chip, the UART communication pin can be configured via jumper; Onboard nano SIM card slot, compatible with NB-IoT specific card