NB-IoT-DevKit is IoT board with BC66 LTE GSM module which covers all world wide GSM bands.
NB-IoT (Narrowband Internet of Things) technology is direct competitor to LoRaWAN and SigFox and has a few advantages:
Note: All GSM cells which work with LTE can also support NB-IoT, but this requires new protocol installation and licensee fee, so not all operators provide it by default. You have to check with your local GSM operator if he offers NB-IoT. Also SIM card must have this protocol enabled. SIM with LTE may or may not work with NB-IoT, this depends on your operator.