Disclaimer: Images are for illustration only. Specifications may vary by batch.
TTGO T-Call v1.3 v1.4 ESP32 Wireless Module & SIM800L GPRS Module (with Antenna) is a custom ESP32 (ESP-WROVER-B 8MB PSRAM) based development board with an onboard 2G/GPRS Module SIM800L. The USB Type C pluggable board also has an onboard LiPo Battery Charging Circuit & Connector and is a good choice for building IoT applications.
Hardware Specifications :
- Chipset ESPRESSIF-ESP32 240MHz Xtensa® single-/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 preamplifier
- 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°C ~ +85°C
- 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 Description :
- Standard FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC
- Protocol 802.11 b/g/n (802.11n, speed up to 150Mbps) 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 Description :
- 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 Description :
- 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/iOS app
- OS FreeRTOS
Package Includes:
- 1 x TTGO T-Call v1.3 ESP32 Wireless Module & SIM800L GPRS Module
Note :
Kindly note that image is for reference only. Model and version no. Printed on PCB might differ.
