ESP32 SIM800L
- 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.
- 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 Nano SIM card
- Working temperature range : -40℃ ~ +85℃
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