Have just deployed a RPi3B SensorGnome fitted with a EBD021 4G hat. Literally plug and play as worked straight “out of the box”. Unlike the likes of the Huawei 4G dongles and perhaps others, there’s no web GUI for configuration. “GPIO Modem Control: Wake, reset, and manage the modem via Pi pins” is advertised. Solwise: Teltonika Calyx - Embedded Cellular Raspberry Pi HAT+ Calyx-EBD021 - TL-CALYX-EBD021 | Solwise Ltd
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