IoT Sensor to Cloud
Processor
ESP32-D0WD-V3 Dual Core Xtensa® 32-bit LX6 Microprocessor
Memory
Internal 520KB SRAM + 16KB SRAM in RTC
Mass Storage
16MB SPI Flash
8MB PSRAM
microSD slot
Networking
Embedded WiFi (802.11 b/g/n) + BT 4.2/BT LE module
Optional Modem with GNSS functionality:
• Quad Band GSM/GPRS Modem, SIMCON SIM868
• Global-Band LTE CAT-M modem, SIMCON SIM7080G
Audio
RS-232 / TTL UART (jumper selectable) port on 6-pin dedicated
connector
Serial Ports
RS-232 / TTL UART (jumper selectable) port on 6-pin dedicated
connector