LILYGO TTGO T-Call ESP32 GPRS Wireless Module With SIM800L And PMU

The LILYGO TTGO T-Call ESP32 GPRS Wireless Module integrates an ESP32 microcontroller with a SIM800L GSM GPRS modem and onboard power management unit PMU. It supports GSM communication for data transmission SMS and voice functions while providing WiFi and Bluetooth capability through the ESP32.

This module is designed for IoT applications remote monitoring GPS tracking and industrial data acquisition systems. The integrated SIM card slot GPRS antenna interface and battery management circuit simplify development of cellular connected embedded systems.

KEY FEATURES

• Integrated ESP32 WiFi Bluetooth microcontroller
• SIM800L GSM GPRS communication module
• Supports SMS GPRS data and voice functions
• Onboard PMU power management unit
• SIM card slot for GSM network access
• External GPRS antenna interface
• Compact development board design

SPECIFICATIONS

• Microcontroller = ESP32 dual core
• GSM Module = SIM800L quad band
• Operating Voltage = 3.7-4.2V battery input
• Charging Input = 5V DC
• Wireless Connectivity = WiFi 2.4GHz Bluetooth GSM GPRS
• SIM Support = Micro SIM card
• Antenna Interface = GSM antenna connector

INTERFACES

• 5V = External power input
• GND = Ground
• BAT = Lithium battery input
• TX = UART transmit
• RX = UART receive
• GPIO = General purpose input output pins
• SIM = SIM card slot
• ANT = GPRS antenna connector