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