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 various applications: Wi-Fi enables broad communication connectivity 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. IEEE 802.11b/g/n (802.11n, up to 150 Mbps) Wi-Fi frequency range: 2400–2483.5 MHz Clock frequency adjustment range: 80 MHz to 240 MHz Supports RTOS Built-in 2-channel 12-bit high-precision ADC, up to 18 channels Supports UART / GPIO / ADC / DAC / SDIO / PWM / I²C / I²S interfaces Supports multiple sleep modes; ESP32 chip sleep current is less than 5 µA Embedded LwIP protocol stack Supports STA / AP / 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 Windows and Linux development environments Type: Development Board Color: Black Material: PCB Package Contents: 1 x Development Board Note: Lighting conditions and display variations may cause slight color differences between the image and the actual product. Measurement tolerance is ±1–3 cm.