The LILYGO T-Echo Plus is another off-grid LoRa communicator, similar to Blackout Comms, ThinkNode M2, and Wio Tracker L1 Pro ...
The nRF9151 SMA Development Kit (DK) from Nordic Semiconductor helps engineers build cellular IoT, DECT NR+, and NTN ...
Read, Write and Delete Messages (with I2C Keyboard or Phone). Asking Weather Report. Listening to other Trackers arround. Changing Display Eco Mode (turn off after 4 seg) and Screen Brightness.