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
Package includes:
1 x T-Call V1.3
1 x Power cord
2 x Pin header
1 x GPRS antenna (9cm)
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