TTGO T-Call V1.4 ESP32 SIM800L GSM Module Upgraded Version Of V1.3

The TTGO T-Call is an ESP32 development board that combines a SIM800L GSM module and ESP32 Module. Besides Wi-Fi and Bluetooth, you can communicate with this ESP32 board using SMS or phone calls. Additionally, you can connect the ESP32 to the internet using your SIM card data plan. This is great for IoT projects that don’t have access to a nearby router via Wi-Fi.

Hardware Specifications of ESP32 SIM800L GSM Module

Chipset	ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
FLASH	QSPI flash 4MB / PSRAM 8MB
SRAM	520 kB SRAM
Button	Reset
USB to TTL	CP2104
Modular interface	UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA pre-amplifier
On-board clock	40MHz crystal oscillator
Working voltage	2.7V-3.6V
Working current	About 70mA
Sleep current	About 1.1mA
SIM card	Only supports Nano SIM card
Working temperature range	-40℃ ~ +85℃
Size&Weight	78.83mm*28.92mm*8.06mm(11.77g)

 

Power Supply Specifications

Power Supply	USB 5V/1A
Charging current	500mA
Battery	3.7V lithium battery
JST Connector	2Pin 1.25mm
USB	Type-C
Wi-Fi	Description
Standard	FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC
Protocol	802.11 b/g/n(802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval
Frequency range	2.4GHz~2.5GHz(2400M~2483.5M)
Transmit Power	22dBm
Communication distance	300m
Bluetooth	Description
Protocol	meet bluetooth v4.2BR/EDR and BLE standard
Radio frequency	with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH
Audio frequency	CVSD&SBC audio frequency
Software specification	Description
Wi-Fi Mode	Station/SoftAP/SoftAP+Station/P2P
Security mechanism	WPA/WPA2/WPA2-Enterprise/WPS
Encryption Type	AES/RSA/ECC/SHA
Firmware upgrade	UART download/OTA（Through network/host to download and write firmware
Software Development	Support cloud server development /SDK for user firmware development
Networking protocol	IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT
User Configuration	AT + Instruction set, cloud server, android/iOSapp
OS	FreeRTOS

 

More Information:

https://github.com/Xinyuan-LilyGO/LilyGo-T-Call-SIM800

Windows Driver Link：

http://www.wch.cn/downloads/CH343SER_EXE.html

More Information:

https://github.com/Xinyuan-LilyGO/TTGO-T-Call

Package includes:

• 1 x T-Call V1.3
• 1 x Power cord
• 2 x Pin header
• 1 x GPRS antenna (9cm)

• SKU: B242,L2,Th1,KRT
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• Category: Development Boards
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• Tags: TTGO T-Call V1.4 ESP32 SIM800L GSM Module Upgraded Version Of V1.3