ESP32 NodeMCU Development Board ESP 32

MCU: Espressif ESP32‑WROOM‑32 module (dual-core LX6, up to 240 MHz)
Flash Memory: 4 MB (module onboard)
SRAM: 520 KB internal
Wireless: Wi‑Fi 802.11 b/g/n (2.4 GHz, up to 150 Mbps) and Bluetooth v4.2 (BR/EDR + BLE)
Logic Voltage: 3.3 V; USB input 5 V via onboard CP2102
I/O Interfaces: GPIO, ADC, DAC, PWM, I²C, SPI, UART, I²S, CAN, Touch, RMT, SDIO, Ethernet (via module pinout)
Power Modes: Deep-sleep (~10 µA), Light/Mobile sleep for low-power IoT
Operating Temperature: −40 °C to +85 °C
Form Factor: Breadboard-compatible dual row headers (~51 × 25 mm)