Placeholder TTGO T-Call ESP32 with SIM800L GPRS Module – Voltaat

TTGO T-Call ESP32 with SIM800L GPRS Module

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  • Regular price 115 QAR
  • Product ID: VT-1655
    9 in stock

  • Hardware Specifications:

    • Chipset: ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
    • FLASH Memory: QSPI flash 4MB / PSRAM  8MB
    • SRAM: 520 KB SRAM
    • Button: Reset
    • USB to TTL IC: CP2104
    • Modular interface: UAR, 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 300uA
    • 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 (Not included)
    • JST Connector: 2Pin 1.25mm
    • USB: Type-C


    • 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


    • Quad-band 850/900/1800/1900MHz
    • Connect onto any global GSM network with any 2G SIM
    • Send and receive SMS messages.
    • Send and receive GPRS data (TCP/IP, HTTP, etc.)
    • AT command interface with "auto baud" detection.


    • Protocol: Bluetooth v4.2BR/EDR and BLE standard
    • Radio frequency: -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH
    • Audio frequency: CVSD&SBC audio frequency

    Software Specification:

    • 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