TTGO T-Call ESP32 with SIM800L GPRS Module

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  • Regular price QAR 110
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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