The core of this module is the ESP32 chip, which is scalable and self-adaptive. The clock frequency can be adjusted from 80 MHz to 240 MHz, and it supports RTOS. It is a general-purpose Wi-Fi + Bluetooth + BLE MCU module. The NodeMCU-32S module integrates traditional Bluetooth, Bluetooth Low Energy, and Wi-Fi. It supports a wide range of applications: Wi-Fi enables various communication connections and direct internet access via routers; Bluetooth allows connection to mobile devices or broadcasting BLE Beacon signals for detection. The module supports a data transmission rate of up to 150 Mbps, and the antenna output power reaches 20 dBm, enabling long-range wireless communication. Features: - IEEE 802.11b/g/n Wi-Fi (up to 150 Mbps) - Wi-Fi frequency range: 2400–2483.5 MHz - Adjustable clock frequency: 80 MHz to 240 MHz - Supports RTOS - Built-in two-channel 12-bit ADC, up to 18 channels - Supports UART, GPIO, ADC, SDIO, PWM, I²C, and I²S interfaces - Multiple sleep modes; ESP32 sleep current < 5 µA - Embedded LwIP protocol stack - Supports STA, AP, and STA+AP operating modes - Supports serial port local firmware upgrade and remote firmware upgrade (FOTA) - Compatible with standard AT commands - Supports secondary development; compatible with Linux-based development environments Type: Development Board Material: PCB Color: Black Package Contents: 1 × Development Board Note: The package includes only the development board. Other accessories are not included. Color may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.