TTGO Meshtastic T-Beam V1.1 ESP32 923 MHz OLED WiFi Bluetooth GPS NEO-6M SMA 18650 Battery Support, 923MHZ OLED

Product Demonstration (Note: OLED is not T-soldered
Characteristics:
1. ESP 32 Version: Rev1
2. WiFi.
3. Bluetooth
4. 4MB PSRAM.
5. 4MB flash memory
6. Three-dimensional antenna

Product Description:
1. Working voltage: 1.8~3.7V
2. Acceptable current: 10 ~ 14 mA
3. Transmit current: 120 mA @ + 20 dbm
4. 90mA @ + 17dBm
5. 29 MA @ + 13 DBM
6. Working frequency: 433/470MHz (433 HMZ version) SX1278 / 868M / 915m (868MHz version) SX1276
7. Transmit power: +20 DBM
8. Sensitivity reception:
-139 dbm@lora&62.5khz&sf=12&146 bps.
-136 DBM @ LORA & 125 KHZ & SF = 12 & 293 BPS
-118 DBM @ LORA & 125 KHZ & SF = 6 & 9380 BPS
-123 DBM @ FSK and 5 KHZ and 1.2Kbps
9. Frequency error: +/- 15 kHz
10. FIFO space: 64 bytes
11. Vote on data:
1.2K ~ 300Kbps @ FSK
0.018k ~37.5kbps@lora.
12. Modulation method: FSK, GFSK, MSK, GMSK, Lora TM, Ook
13. Interface Module: SPI
14. Current sleep: 0.2UA @ ???
15. 1.5Ua@idle.
16. Working temperature: -40 degrees Celsius- +85 degrees Celsius
17. Digital RSSI function
18. Automatic frequency correction
19. Automatic gain control
20. Low pressure detection
21. Quick wake-up and hope in frequency
22. Highly configurable package manager

Global Positioning System:
1. Neo-6m GPS module, universal 3V-5V power supply
2. The pre-determined module with ceramic antenna, super signal
3. Save the EEPROM configuration parameter data
4. With data backup battery
5. With LED signal indicator
6. The default baud rate: 9600

energy:
1. TP 5400.
2. 1A Battery Management
3. LED Indicator: There are 4 LEDs to display the battery status in real time
4. USB.
5. CP 2104-GMR
6. Pre-flash firmware signature

OLED Description:
1. Size: 0.96 inch
2. High resolution: 128x64
3. Color: White
4. Viewing angle: >160 degrees
5.Driver IC: SSD 1306
6. Working temperature: -30 ~ 80 degrees Celsius
7. Module size (generous): 27.0mm x 27.0mm x 4.1mm
8. Support a variety of control chips: Fully compatible with Arduino, 51 series, MSP 430 series, STM 32/2, CSR chip, etc. (A lot of examples are available for reference)
9. Wide voltage support: directly support 3.3V ~ 5V DC power supply without any modification
10. Ultra-low power consumption: 0.04W in normal operation
11. IO port occupies the smallest display: IIC communication, up to two IO ports