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 has a wide range of applications: Wi-Fi supports various communication connections and allows direct internet access through routers; Bluetooth enables connections to mobile devices or broadcasting BLE Beacon signals for detection. The data transmission rate supported by the module is up to 150 Mbps, and the antenna output power reaches 20 dBm, enabling long-range wireless communication. Complies with 802.11 b/g/n (802.11n, up to 150 Mbps) Wi-Fi frequency range: 2400–2483.5 MHz Clock frequency range: 80 MHz to 240 MHz Supports RTOS Built-in 2-channel 12-bit high-precision ADC, supports up to 18 channels Supports UART/GPIO/ADC/DAC/SDIO/PWM/I2C/I2S interfaces Supports multiple sleep modes; sleep current of ESP32 chip is less than 5 μA Embedded LwIP protocol stack Supports STA/AP/STA+AP working modes Supports serial port local upgrade and remote firmware upgrade (FOTA) Compatible with standard AT commands Supports secondary development with Windows and Linux development environments Type: Development Board Color: Black Material: PCB Package Contents: 1 x Development Board Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement allows an error of +/- 1–3 cm.