Description: 1. TTGO T-Call V1.4: An ESP32 WiFi+Cellular module integrated with the SIM800L full-featured GSM/GPRS/Quad-Band 2G/3G module by SiPix Microelectronics. 2. Versatile Communication: Supports both WiFi and Cellular communication, enabling various applications like remote monitoring, IoT projects, and M2M communications. 3. SIM800L Module Features: Offers SMS, GPRS, and voice call capabilities using a standard SIM card, making it suitable for diverse use-cases where real-time communication is essential. 4. ESP32 Microcontroller: Powered by an ESP32 microcontroller, known for its low power consumption and high processing capabilities, ensuring stable performance even in resource-constrained environments. 5. Compatibility: Works with popular development boards like NodeMCU, Arduino IDE, Micropython, and the FreeRTOS SDK, allowing developers to use their preferred programming environment for easier implementation. 6. Integrated Antenna: Features an integrated GPS antenna and a SIM card
| Specification | Details |
|---|---|
| Microcontroller | ESP32 Dual-Core 32-bit MCU @ 240 MHz |
| Communication Protocols | Wi-Fi (802.11 b/g/n) Bluetooth 5.0 SIM800L GPRS/EDGE Modem |
| SIM Card Support | Micro-SIM card slot for SIM800L |
| Operating System | ESP-IDF (Espressif's official SDK) with LwIP TCP/IP Stack |
| Memory and Storage | 520 KB SRAM 4 MB SPI Flash microSD card slot for external storage |
| Power Supply | DC 5V @ 1A; can be powered via USB-C or Li-ion battery (3.7V) |
| Dimensions | 66 x 38.5 mm (2.6 x 1.52 in) |
| Weight | approximately 25 grams (0.88 oz) |
| Operating Temperature | -40°C to +85°C (-40°F to 185°F) |
| Certifications | CE FCC RoHS compliance |
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