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T-CALL V1.4 TTGO ESP32 GPRS SIM800H Bluetooth WIFI module Arduino
No review at the momentArduino TTGO ESP32 T-Call V1.4 module with GPRS and SIM card support, based on the ESP32 microprocessor and with WIFI 802.11 b/g/n connection , Bluetooth 4.2 and GPRS SIM800H module.
Compatible with the Arduino development environment.
Supplied with: 1 TTGO LilyGO ESP32 T-Call v1.4 PCB module, 2 headers (for soldering), 1 GPRS PCB antenna with IPEX connector (U.FL), 1 power cable. USB-C cable not included (available as an option).
Data sheet
Specifications ESP32 TTGO SIM GPRS
| Chipset | ESPRESSIF ESP32 240 MHz 32 bits |
| FLASH Memory | QSPI flash 4MB PSRAM 8MB |
| RAM | 520 KB SRAM |
| USB to TTL | CP2104 |
| Interface | UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, ADC, capacitor touch sensor, DACLNA pre-amplifier |
| Display | IPS ST7789V 2.9cm (1.14 Inches) |
| Supply voltage | 2.7V to 4.2V |
| Working current | 67MA |
| Sleep current | 350uA |
| Operating temperature | -40 ℃ ~ + 85 ℃ |
| Size and Weight | 51.52*25.04*8.54mm (7.81g) |
| Power supply | USB 5 V/1A |
| Charging current | 500mA |
| Battery | 3.7 V lithium battery (not supplied) |
| GPRS antenna connector | IPEX (UFL) |
| USB connector | Type-C |
| WIFI protocol | 802.11 b/g/n |
| Frequency range | 2.4 GHz ~ 2.5 GHz (2400 - 2483.5 Mhz) |
| Transmission power | 20-22dBm - 100-158mW |
| GPRS SIM chip | SIM800H module |
| Bluetooth protocol | Bluetooth v4.2 and BLE standard |
| Sensitivity | -97dBm |
| Wi-Fi mode | Station/SoftAP/SoftAP + Station/P2P |
| Wi-Fi security | WPA/WPA2/WPA2-Enterprise/WPS |
| Encryption | AES/RSA/ECC/SHA |
| Firmware update | By UART/OTA download (via network/host) |
| Software development | Supports cloud server/SDK development |
| Network protocol | IPv4, IPv6, SSL, TCP, UDP, HTTP, FTP and MQTT |
| OS | FreeRTOS |
TTGO T-CALL GPRS SIM connection diagram
More information and documentation on Github : https://github.com/Xinyuan-LilyGO/TTGO-T-Call
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