This is a TTGO T-Call V1.4 ESP32 Wireless Module SIM Antenna SIM Card SIM800L Module Unsoldered. The module is used for wireless communication. The ESP V1.4 ESP32 Serial WIFI Wireless Transceiver Module is a self-contained SOC with an integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network.
This module has a powerful enough onboard processing and storage capability that allows it to be integrated with the sensors and other application-specific devices through its GPIOs with minimal development up-front and minimal loading during runtime.
The SIM800L wireless communication module is integrated with an ESP32 chip with a dual-core 32-bit LX6 microprocessor.
The SIM800L ESP32 wireless module needs a power supply of 5V/1A and has a Type C port.
The ESP32 SIM800L wireless communication module features 802.11 b/g/n wifi protocol and Bluetooth v4.2BR/EDR and BLE standard protocol.
This wireless communication module supports cloud server development and SDK for user firmware development.
1 x TTGO T-Call V1.4 ESP32 Wireless Module SIM Antenna SIM Card SIM800L Module Unsoldered
Chipset ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
FLASH QSPI flash 4MB / PSRAM 8MB
SRAM 520 kB
USB to TTL CP2104
On-board clock 40MHz crystal oscillator
Working voltage 2.7V-3.6V
Working current 70mA
SIM card Only supports Nano SIM card
Power Supply USB 5V/1A
Working Temperature Range (°C) -40 to 85
Length (mm) 77
Width (mm) 29
Height (mm) 12
Weight (gm) 17
Shipment Weight 0.02 kg
Shipment Dimensions 9 × 5 × 1 cm