TTGO T Call ESP32 Wireless Module GPRS Antenna SIM Card SIM800L

Description of TTGO T Call ESP32 Wireless Module GPRS Antenna SIM Card SIM800L The ESP32-WROVER-B SIM800L Communication Module V1.3 is a high-performance IoT development solution that integrates Wi-Fi, Bluetooth, and GSM/GPRS connectivity in a single compact design. Built on the powerful ESP32-WROVER-B chipset with dual-core processing and extended memory, and paired with the SIM800L GSM/GPRS module, this board enables seamless communication over multiple networks. With a CP2104 USB-to-Serial converter and a USB Type-C interface, the module supports fast debugging and data transmission directly via a computer. The onboard lithium battery charging/discharging circuit ensures continuous operation while charging, with built-in overcharge/discharge protection. This makes it an ideal solution for IoT devices, smart home applications, remote monitoring, and portable communication systems. Key Features Dual-core 240MHz Xtensa LX6 processor with Wi-Fi, Bluetooth, and BLE support. High-speed memory for smooth performance. Quad-band SIM800L GSM/GPRS module supporting SMS, calls, and data, with a Nano-SIM slot. USB-C debugging via a CP2104 chip for quick and easy programming. Built-in battery management for 3.7V Lithium batteries with safe charging and protection. Microphone input and audio output for a wide range of audio applications. Multiple interfaces including UART, SPI, I2C, PWM, ADC, DAC, and GPIO for full connectivity. Technical Details Category Specification Details Core Hardware Chipset ESPRESSIF ESP32, 240MHz Xtensa® dual-core LX6 Flash 4MB QSPI PSRAM 8MB SRAM 520KB On-board Clock 40MHz Crystal Oscillator USB to TTL CP2104 Power Supply Input Voltage DC 3.6V – 5V (USB Type-C) Working Current ~70mA Sleep Current ~300µA Charging Current 500mA Battery Support 3.7V Lithium Battery (2-pin JST 1.25mm) Wi-Fi Standard IEEE 802.11 b/g/n (up to 150Mbps) Frequency 2.4–2.5GHz (2400–2483.5MHz) Transmit Power 22dBm Communication Distance Up to 300m Certification FCC, CE-RED, IC, TELEC, KCC, SRRC, NCC Bluetooth Version Bluetooth v4.2 BR/EDR & BLE RF Sensitivity -97dBm NZIF receiver Classes Class-1 / Class-2 / Class-3 Audio Codec CVSD, SBC GSM/GPRS Frequency Bands 850/900/1800/1900MHz Functions Voice, SMS, GPRS Data SIM Card Nano-SIM (flip slot) Mechanical Operating Temp -40°C ~ 85°C Dimensions 75 × 28 × 8 mm Weight 11.77 g Applications IoT Gateways & Remote Terminals Smart Home & Industrial Automation GSM-based Remote Monitoring Portable Communication Devices Voice/SMS/Data IoT Projects Battery-Powered Wireless Systems Pinout Document Code Packaging Details 1 x TTGO T Call ESP32 Wireless Module GPRS Antenna SIM Card SIM800L TTGO T Call ESP32 Wireless Module GPRS Antenna SIM Card SIM800L - Frequently Asked Questions What is this module and what are its main functions? This is a comprehensive IoT development module that integrates a powerful ESP32-WROVER-B processor with a SIM800L GSM/GPRS module. Its main function is to enable data communication over Wi-Fi, Bluetooth, and cellular (2G) networks, all in one compact device. Can I use this module to send SMS or make phone calls? Yes. The built-in SIM800L module supports the GSM/GPRS network. By using a Nano-SIM card in the provided slot, you can send and receive SMS messages and make voice calls. How is this module powered? The module can be powered via the USB Type-C port or a 3.7V Lithium battery. It includes a built-in battery management circuit that ensures safe charging and discharging, allowing for continuous operation. What are the memory and processor specifications? It features a dual-core 240MHz Xtensa LX6 processor, 4MB QSPI flash memory, and 8MB PSRAM. This configuration provides smooth and fast performance for a wide range of applications. What is the best way to program this module? For easy programming and debugging, it comes with a CP2104 USB-to-Serial converter and a USB Type-C interface. This allows you to connect the module directly to your computer to upload code and manage data. Does this module support 4G networks? No, the SIM800L module only supports 2G (GSM/GPRS) networks. You must ensure that your SIM card and network provider have 2G service enabled for this module to function correctly. What are the ideal applications for this module? This module is perfect for various IoT projects, including: IoT gateways and remote terminals Smart home and industrial automation GSM-based remote monitoring systems Portable communication devices Battery-powered wireless systems Attention  Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please don't hesitate to contact us to determine if further action may be taken. Need Help? Our engineers are available to assist you. If you have any queries, please leave a comment below or call 09678110110 from 09:00 am to 06:00 pm (7 days a week). You can also reach us via WhatsApp or Facebook Inbox