nb-iot based on telecommunication network that provides long distance, low rate, and low power consumption, and is suitable for internet of things. to easily use nb-iot module, nuvoton specially designed the adapter board to make it easy for developers to mount partner’s nb-iot modules on nuvoton’s numaker development platform. nuvoton also provides the reference circuit for end products to easy replacement of nb-iot modules to meet the bands requirement of different countries and regions.