TTGO T-Call v1.3 v1.4 ESP32 Wireless Module & SIM800L GPRS Module (with Antenna)

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TTGO T-Call v1.3 v1.4 ESP32 Wireless Module & SIM800L GPRS Module (with Antenna) is a custom ESP32 (ESP-WROVER-B 8MB PSRAM) based development board with an onboard 2G/GPRS Module SIM800L. The USB Type C pluggable board also has an onboard LiPo Battery Charging Circuit & Connector and is a good choice for building IoT applications. Hardware Specifications : 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 preamplifier On-board clock 40MHz crystal oscillator Working voltage 2.7V-3.6V Working current About 70mA Sleep current About 300uA SIM card Only supports Nano SIM card Working temperature range -40°C ~ 85°C 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 to 150Mbps) 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/iOS app OS FreeRTOS Package Includes: 1 x TTGO T-Call v1.3 ESP32 Wireless Module & SIM800L GPRS Module Note : Kindly note that image is for reference only. Model and version no. Printed on PCB might differ.

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