SELECTED OPTION:
FREQUENCY: 868MHZ
Product Upgrade Content: ? 1. Pin GPIO34 pin is replaced with GPIO35 2. Replace the charging IC (TP5400) with the power management AXP192 3.GPS TX, RX pin replacement 4. Power on and remove, replace with button to open 5. Reduced sleep current 6. GPS battery replacement
Features: ?
ESP32 ESP32 Version: REV0.7
WIFI
bluetooth?
4MB Flash
3D Antenna
?
LORA Working voltage: 1.8~3.7v
Acceptable current: 10~14mA
Transmit current: 120mA@+20dBm
???????????????90mA@+17dBm
? ??????????????29mA@+13dBm
Operating frequency: 433MHz/868MHz/915MHz
Transmit power: +20dBm
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
Frequency error: +/-15KHz
FIFO space: 64Byte
Data rate: 1.2K~300Kbps@FSK
??????????????????0.018K~37.5Kbps@LoRa????????
Modulation Mode: FSK, GFSK, MSK, GMSK, LoRa TM, OOK
Interface form: SPI
Sleep current: 0.2uA@SLEEP
??????????????????????????1.5uA@IDLE
Operatinga??temperature: -40a??- +85a??
Digital RSSI function
Automatic frequency correction
Automatic gain control?
RF wake-up function
Low voltage detection and temperature sensor
Fast wake-up and frequency hopping
Highly configurable data packet handler
GPS GPS modules NEO-6M, 3V-5V power supply Universal
Destined module with ceramic antenna, signal super
Save the configuration parameter data EEPROM Down
With data backup battery
There are LED signal indicator
Default Baud Rate: 9600
Power
IP5306
2A Bat
tery Management
LED indicator: There are 4 LEDs show the battery status in real time.
Power button: Click one time will start. Fast click 2 times will shut down.
USB CP2104-GMR
Product Details: 
Pin?Schematic:
Package included: 1 x TTGO T-Beam ESP32
1 x Antenna
2 x Pin
