NB-IoT 2 Unit Global Version (SIM7028) with Antenna Brand_ModMyPi we've seen performance better than

we've seen performance better than ±2 seconds per million seconds

a built in speaker for playing audio

Don't want to code

is easy to use and integrate into various applications

" for an explaination

NB-IoT 2 Unit Global Version (SIM7028) with Antenna Brand_ModMyPi we've seen performance better thanThe Unit NB IoT2 is a wireless communication module designed for global Cat NB frequency bands. It has an integrated SIM7028 communication module, utilises serial communication (controlled via AT commands) and incorporates an SMA external antenna interface to significantly improve device communication quality and signal stability. The SIM7028 module supports multi band NB IoT network connections, providing broad applicability worldwide. Specifically