TTGO T-Beam ESP32 LoRa 433MHz + OLED WiFi GPS Module NEO-M8N 18650 Battery Holder

ESP32: 1. Version: REV1 2. WIFI 3. Bluetooth 4. 4MB Flash, 8MB PSRAM 5. 3D Antenna LORA: 1. Working voltage: 1.8~3.7V 2. Acceptable current: 10~14mA 3. Transmit current: 120mA@+20dBm, 90mA@+17dBm, 29mA@+13dBm 4. Operating frequency: 433/470MHz(433HMz version) /868M/915M(868MHz version) 5. Transmit power: +20dBm 6. Receive sensitivity: -139dBm@LoRa &62.5Khz&SF;=12&146bps -136dBm@LoRa &125Khz&SF;=12&293bps -118dBm@LoRa &125Khz&SF;=6&9380bps -123dBm@FSK&5Khz&1.2Kbps 7. Frequency error: +/-15KHz 8. FIFO space: 64Byte 9. Data rate: 1.2K~300Kbps@FSK, 0.018K~37.5Kbps@LoRa 10. Modulation Mode: FSK,GFSK,MSK,GMSK,LoRa TM,OOK 11. Interface form: SPI 12. Sleep current: 0.2uA@SLEEP, 1.5uA@IDLE 13. Operatinga??temperature: -40 - +85 Degrees Celsius Digital RSSI function: 1. Automatic frequency correction 2. Automatic gain control 3. Low voltage detection and temperature sensor 4. Fast wake-up and frequency hopping 5. Highly configurable data packet handler GPS: 1. GPS modules NEO-M8N, 3V-5V power supply Universal 2. Destined module with ceramic antenna, signal super 3. Save the configuration parameter data EEPROM Down 4. With data backup battery 5. There are LED signal indicator 6. Default Baud Rate: 9600 Power: 1. TP5400 2. 1A Battery Management 3. LED indicator: There are 4 LEDs show the battery status in real time. USB: 1. CP2104-GMR 2. Pre-Flash Firmware