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 microcontroller unit (MCU) module. The NodeMCU-32S module integrates classic Bluetooth, Bluetooth Low Energy (BLE), 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 beacons for signal 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 two-channel 12-bit high-precision ADC, up to 18 channels Supports UART, GPIO, ADC, DAC, SDIO, PWM, I²C, and I²S interfaces Supports multiple sleep modes; ESP32 sleep current is less than 5 µA Embedded LwIP protocol stack Supports STA, AP, and STA+AP operating modes Supports serial port local firmware upgrade and remote firmware over-the-air (FOTA) upgrade 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