TTGO T-Call V1.3 ESP32 wireless module, FPC antenna SIM Card SIM800L module

Features:

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 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 Nanos SIM card
Working temperature range:-40centigrade ~ +85centigrade
Size&Weight:78.83mm*28.92mm*8.06mm

Power Supply Specifications:

Power Supply:USB 5V/1A
Charging current:500mA
Battery:3.7V battery
JST Connector:2Pin 1.25mm
USB:Type-C

Wi-Fi:

Standard:FCC/CE-RED/ICs/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 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 networks/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