TTGO T-Beamv1.0 ESP32 Chipset Bluetooth WiFi Module 433MHz LoRa NEO-6M GPS Module with SMA Antenna, Upgraded Version

About The Product
1. Working voltage: 1.8~13.7V
2. Acceptable current: 10~114mA
3. Emission current:
- 120mA at + 20dBm
- 90 mA lies at +17dBm
- 29mA at +13dBm
4. Working frequency: 433MHz
5. Transmitting power: + 20dBm
6. Receiving sensitivity:
- 139dBm lies at LoRa & 62.5Khz & SF = 12 & 146bps
- 136dBm lies at LoRa & 125Khz & SF = 12 & 293bps
- 118dBm lies at LoRa & 125Khz & SF = 6 & 9380bps
- 123dBm lies at FSK & 5Khz & 1.2Kbps
7. Frequency error: +/- 15KHz
8. FIFO space: 64Byte
9. Data rate:
-1.2K~1300Kbps at FSK
-0.018K~37.5Kbps at 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. Working temperature: -40 degrees Celsius-+ 85 degrees Celsius
14. Digital RSSI function
15. Automatic frequency correction
16. Automatic gain control
17. Low voltage detection and temperature sensor
18. Fast wake-up and frequency hopping
19. Highly configurable packet handler
20. Global Positioning System
21. GPS module NEO-6M, 3V-5V power supply universal
22. Designated module with ceramic antenna, super signal
23. Save configuration parameter data EEPROM Down
24. Battery with data backup
25. LED signal indicator
26. Default baud rate: 9600
27. Power: TP5400, 1A battery management
28. LED indicator
29. CP2104-GMR
30. Pre-flash firmware: SoftRF V4.0

This product is based on LoRa radio frequency, 868MHz (common in North America), 915MHz (common in Europe) and 433MHz (common in Asia Pacific)

Upgraded Version
1. Replace the pin GPIO34 of the header with GPIO15
2. Replace the charging IC (TP5400) with the power management AXP192
3. Replace the TX and RX pins of GPS
4. Remove the power switch and replace it with a key switch
5. Sleep current is minimized
6. GPS battery replacement