Meshtastic T-Beam ESP32 LoRa 433/868/915/923Mhz SX1276/SX1278 Wireless Module WiFi GPS NEO-6M With 0.96 inch OLED Display For Arduino. Sample Code For Reference [Github] If you need technical support please check the below link to find more details. Meshtastic Firmware LILYGO Lora Series Specifications MCU ESP32 Flash 4MB PSRAM 8MB Serial Chip CH9102 Wireless protocol Wi-Fi + Bluetooth 4.2 PMU AXP2101 Onboard functions 3 Buttons (Power+IO38+Reset) Antenna 3D WiFi Antenna [Use by default] (Support WiFi IPEX external antenna, but you need to jump resistance) LoRa antenna GPS ceramic antenna GPS NE0-6M GPS Modules: Support GPS protocol Onboard RTC crystal, Support interrupt/ wakeup LoRa Long Range Low Power LoRa Transceiver High sensitivity: -i48dBm Transceive rate: 300 kbps Optional Hardware Version: SX1278[433Mhz] / SX1276[868/915/923Mhz] Display Details OLED: 0.96 inch Driver: SSD1306 Software Meshtastic Power Supply Mode Support USB Micro/ 18650 battery holder [USB can power the battery] Product Display Appearance Size Pin Diagram Shopping List [Pay attention to the OLED when opening the box, ship without 18650 battery] 433Mhz Option (OLED Not Soldered Version) 1 X T-Beam 1 X 433Mhz Antenna 1 X 0.96 inch 128X64 OLED 2 X Pin 433Mhz Option (OLED Soldered Version) 1 X T-Beam (Include Soldered OLED) 1 X 433Mhz Antenna 2 X Pin