TTGO T-Call ESP32 Wireless and Cellular SIM800L Module

The TTGO Wireless Module is a compact and versatile solution featuring calling, SMS, data, Wi-Fi, and Bluetooth capabilities. The TTGO T-Call Board combines the ESP32 and SIM800L, enabling both GSM network communication and wireless connectivity via Wi-Fi and Bluetooth. The TTGO T-Call Development Module is designed with a small form factor and side pin headers, making it easy to connect to other boards and ideal for various IoT projects. It includes a SIM card slot supporting nano SIMs for the SIM800L module.

The SIM800L cellular module by SIMCOM is widely used due to its small size, low power consumption, and full GSM functionality. It operates on four common cellular frequency bands and supports voice calls, SMS, MMS, and data transmission.

Combining the SIM800L and ESP32 creates the TTGO T-Call Wireless and Cellular Module, a highly efficient and popular board for IoT, telecommunications, and many other applications. The latest version, the TTGO T-Call V1.4 Wireless and Cellular Module with SIM800L and ESP32 Chip, offers robust performance and versatility for developers. The TTGO T-Call is an excellent choice for connected projects requiring both cellular and wireless communication.

Applications of the TTGO Wireless Module

1. IoT Solutions

2. Communication Projects

3. Wireless Authenticatio

Specifications of the TTGO T-Call V1.4 Module with SIM800L and ESP32 Chip

1. Chipset: ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
2. Flash Memory: 4MB QSPI flash / 8MB PSRAM
3. SRAM: 520 kB
4. Button: Reset
5. USB to TTL Converter: CP2104
6. Interfaces: UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor, touch sensor, ADC, DACLNA pre-amplifier
7. Clock: 40 MHz crystal oscillator
8. Operating Voltage: 2.7V to 3.6V
9. Operating Current: Approximately 70mA
10. Sleep Current: Around 300μA
11. SIM Card Support: Nano SIM only
12. Operating Temperature Range: -40°C to +85°C
13. Dimensions: 78.83 × 28.92 × 8.06 mm
14. Weight: 11.77 grams
15. Power Supply: USB 5V/1A
16. Charging Current: 500mA
17. Battery: 3.7V lithium-ion
18. Connector: 2-pin 1.25mm JST
19. USB Port: Type-C
20. Certifications: FCC, CE-RED, IC, TELEC, KCC, SRRC, NCC
21. Wi-Fi Protocol: 802.11 b/g/n (up to 150 Mbps), supports A-MPDU and A-MSDU aggregation, 0.4μS protection interval
22. Frequency Range: 2.4 GHz to 2.5 GHz (2400 MHz to 2483.5 MHz)
23. Transmit Power: 22 dBm
24. Communication Range: Up to 300 meters
25. Bluetooth: Version 4.2 BR/EDR and BLE standards
26. Radio Sensitivity: -97 dBm NZIF receiver, Class 1, 2 & 3 emitter with AFH
27. Audio Support: CVSD & SBC audio codecs
28. Wi-Fi Modes: Station, SoftAP, SoftAP + Station, P2P
29. Security: WPA/WPA2/WPA2-Enterprise/WPS
30. Encryption: AES, RSA, ECC, SHA
31. Firmware Updates: UART download and OTA (over-the-air) support
32. Development Support: Cloud server integration and SDK for custom firmware
33. Network Protocols: IPv4, IPv6, SSL, TCP, UDP, HTTP, FTP, MQTT
34. User Configuration: AT command set, cloud server, Android/iOS app compatibility
35. Operating System: FreeRTOS