This is a TTGO T-Call V1.4 ESP32 Wireless Module SIM Antenna SIM Card SIM800L Module Unsoldered. The module is used for wireless communication. The ESP V1.4 ESP32 Serial WIFI Wireless Transceiver Module is a self-contained SOC with an integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network.
This module has a powerful enough onboard processing and storage capability that allows it to be integrated with the sensors and other application-specific devices through its GPIOs with minimal development up-front and minimal loading during runtime.
Features:
- The SIM800L wireless communication module is integrated with an ESP32 chip with a dual-core 32-bit LX6 microprocessor.
- The SIM800L ESP32 wireless module needs a power supply of 5V/1A and has a Type C port.
- The ESP32 SIM800L wireless communication module features 802.11 b/g/n wifi protocol and Bluetooth v4.2BR/EDR and BLE standard protocol.
- This wireless communication module supports cloud server development and SDK for user firmware development.
Detailed Features:
| Detailed Features | |
| Hardware Specifications | |
| Chipset | ESPRESSIF-ESP32 240MHz Xtensa® dual-core 32-bit LX6 microprocessor |
| FLASH | QSPI flash 4MB / PSRAM 8MB |
| SRAM | 520 kB SRAM |
| Button | Reset |
| USB to TTL | CP2104 |
| Modular interface | UART, 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 |
| JST Connector | 2Pin 1.25mm |
| USB | Type-C |
| Wi-Fi | |
| Standard | FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC |
| 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 |
| Bluetooth | |
| Protocol | meet bluetooth v4.2BR/EDR and BLE standard |
| Radio frequency | with -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 |
Additional information
| Origin | CN(Origin) |
|---|---|
| Model | TTGO T-Call V1.4 ESP32 Wireless Module |
| Chipset | ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor |
| FLASH | QSPI flash 4MB / PSRAM 8MB |
| SRAM | 520 kB |
| USB to TTL | CP2104 |
| On-board clock | 40MHz crystal oscillator |
| Working voltage | 2.7V-3.6V |
| Working current | 70mA |
| SIM card | Only supports Nano SIM card |
| Power Supply | USB 5V/1A |
| USB | Type-C |
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