| Hardware Specifications | |
| Slices | ESPRESSIF-ESP32 240MHz Xtensa® Single/Dual Core 32-bit LX6 Processor |
| flash | QSPI Flash 4MB/PSRAM 8MB |
| SRAM | 520 kB SRAM |
| button | Re |
| USB to TT |
CP2104 or CH9102F QFN24 or CH340K |
| interface modules | UART, SPI, SDIO, I2C, PWM, I2S, ADC |
| aboard an hour | 40MHz Crystal Oscillator |
| working voltage | 2.7V-3.6V |
| current work | about 70mA |
| current sleep | about 1.1mA |
| sim card | Only supports nano SIM card |
| Working temperature range | -40℃~+85℃ |
| size and weight | 78.83mm * 28.92mm * 8.06mm (11.77g) |
| power supply specifications | |
| Power supply | USB 5V/1A |
| charging current | 500mA |
| the battery | 3.7V lithium battery |
| JST connector | 2Pin 2.0mm |
| USB | Type-C |
|
WIFI |
|
| standard | FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC (esp32 chip) |
| protocol | 802.11 b/g/n(802.11n, up to150Mbps acceleration) A-MPDU and A-MSDU polymerization, support 0.4μS protection interval |
| Frequency range | 2.4GHz ~ 2.5GHz (2400M ~ 2483.5M) |
| The transfer of energy | 22dBm |
| communication distance | 300m |
|
Bluetooth |
|
| protocol | Meet Bluetooth v4.2BR/EDR and BLE standard |
| radio frequency | With -97dBm sensitivity of NZIF Receiver Class 1, Class 2 and Class 3 AFH emitter |
| sound frequency | CVSD and SBC audio frequency |
|
Specification program |
|
| wifi mode | Terminal/SoftAP/SoftAP + Terminal/P2P |
| security mechanism | WPA/WPA2/WPA2-Enterprise/WPS |
| Encoder type | AES/RSA/ECC/SHA |
| Firmware upgrade | UART download/OTA (through network/host to download and write firmware) |
| Software development | Support cloud server/SDK development for user firmware development |
| networking protocol | IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT |
| Configuration user | AT+ instruction set, cloud server, Android/iOSapp |
| OS | FreeRTOS |
More information: https://github.com/Xinyuan-LilyGO/LilyGo-T-Call-SIM800
Connect the power supply, click to start, after starting, click to reset, double click to turn off.
T-Call V1.4 Size Chart
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