LILYGO® TTGO Meshtastic T-Beam V1.2 esp32 lora 1,2 mhz 915mhz 433mhz 868mhz wifi ble gps mit 923

LILYGO® TTGO Meshtastic T-Beam V1.2 esp32 lora 1,2 mhz 915mhz 433mhz 868mhz wifi ble gps mit 923

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