TTGO T-Call V1.4ESP32

Description

The main body of the module consists of ESP32-WROver-B and SIM800L modules. The peripheral uses a USB to serial port chip CP210X to expand the TYPE-C interface, which can be directly connected to a computer via USB cable for debugging. The data transmission is fast and stable. ESP32-WROver-B is a general-purpose WI-FI+BT+BLE MCU module that integrates ESP32-D0WD chip,
PCB onboard antenna, Bluetooth, and WIF | into one. SIM800L is a 4-band GSM/GPRS module with operating frequencies of 850/900/1800/1900MHz, capable of transmitting low-power voice, SMS, and data information.
The biggest feature of this module is the integration of ESP32-WROver-B and SIM800L modules, which integrate the functions of the two modules. It also has a lithium battery charging and discharging circuit,
which can power and charge the battery and has overcharging and discharging protection.

1: Power supply voltage: DC3.6V~5V (TYPEC port 5V input)
2: On board lithium battery interface and integrated lithium battery charging and discharging circuit
3: The module can work while charging the battery
4: Charging current 500MA
5: Supports WIFI and Bluetooth transmission
6: Flip style SIM card slot design, can use 2G/3G/4GNANO from China Mobile or China Unicom
SIM card
7: Supports the transmission of voice, SMS, and data information
8: Two onboard audio ports: including microphone input and audio output ports
9: One 1013 pin indicator light with blue LED on board

Package:

1xTTGO T-Call V1.4ESP32