MKR NB 1500 supports connectivity through: LTE Cat M1 / NB1: Class 3 (23 dBm).
The Narrowband connectivity is performed with a module from u-blox, the SARA-R410M-02B, a low power chipset operating in the different bands of the IoT LTE cellular range. This board is designed for global use, providing connectivity on LTE’s Cat M1/NB1 bands 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28.