Package Includes

  • 1x TTGO T-CALL ESP32 + SIM800L Dev Board
  • 1x GSM Flex PCB Antenna
  • 1x Battery Connector with Cable
  • 2x 20-Way SIL Straight Pin Headers

Out of stock

General Features / Specs

  • Manufacturer: LILYGO
  • PCB Model: TTGO T-Call v1.5
  • Core Module: Espressif ESP32-WROVER-B (ESP32-D0WDQ6) (80 – 240MHz, Dual-Core, Tensilica 32-Bit LX6 Dual-Core Microprocessor)
  • External Flash Memory: QSPI 32-Mbit (4MB)
  • SRAM: 520kB
  • PSRAM / SPI RAM: 8MB (Only 4MB can be used currently)
  • USB to UART Interface IC: CH340K (Max Read/Write Speed – 2Mbps)
  • Power Management IC: IP5306
  • GSM Module: SIMCom SIM800L (Refurbished Module)
  • SIM Card Slot: Nano SIM
  • USB Connector Type: USB Type-C
  • USB Supply Requirements: 5VDC (≥ 1A)
  • Battery Operating Voltage: 3.0 – 4.2VDC
  • Operating Temperature: -40 to +85°C
  • Dimensions: ~(78.8mm x 28.9mm x 8mm)

WiFi Features / Specs

  • WiFi Protocols: 802.11 b/g/n (802.11n up to 150 Mbps)
  • Frequency Range: 2.4GHz ~ 2.5GHz
  • Wireless Network Modes: Station / SoftAP / SoftAP + Station / P2P
  • Hardware Features: UART / SPI / I2C / I2S / SDIO / PWM / ADC / DAC / Capacitive Touch Sensor / Hall Sensor / Temperature Sensor / GPIO
  • Network Protocols: IPv4 / IPv6 / SSL / TCP / UDP / HTTP / FTP / MQTT
  • WiFi Security Modes: WPA / WPA2 / WPA2-Enterprise / WPS

Bluetooth Features / Specs

  • Bluetooth Protocols: Bluetooth v4.2 BR/EDR and BLE specification

SIM800L Features / Specs

  • Supported GSM Frequencies: 850/900/1800/1900MHz (Quad Band)
  • Transmitting Power: Class 4 (2W) at GSM 850 and EGSM 900 / Class 1 (1W) at DCS 1800 and PCS 1900
  • GPRS Connectivity: GPRS multi-slot class 12 (Default) / GPRS multi-slot class 1~12 (Optional)
  • GPRS Data Transfer Speed (Max): Downlink (85.6kbps) / Uplink (85.6kbps)
  • Compatible AT Command Sets: 3GPP TS 27.007,27.005 and SIMCOM Enhanced AT Commands

Note on Refurbished Modules:
As you may have noticed, the SIMCom SIM800L modules used on these boards are classified as refurbished. What this ultimately means is that the modules have been de-soldered from another device that may or may not have been in operation, and re-soldered onto these brand new boards with the rest of the components being brand new as well. The modules are still fully operational and original SIMCom modules, but may have some marks and scratches on their labels (This happens during de-soldering). We would like to be completely transparent regarding all the items we sell which is why we think it is important to explain the above in such detail.


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