Feature:1. USB Connection Debugging: For ESP32 development board integrates the USB to serial chip, through the micro USB interface, it can be directly connected to the computer for fast and stable debugging, which greatly improves the development efficiency.2. Powerful Wireless Communicating: The module has built in advanced Bluetooth 4.2 (including BR, EDR and BLE standards) and 802.11b, g, n Wireless Fidelity functions, which are suitable for a wide range of wireless application needs, such as home automation, industrial control, and wireless positioning systems.3. Easy To Use Control And Programming: Equipped with two light touch keys to simplify the operating process, one is used to reset the module and the other is used to enter the download program mode, which is convenient for updating firmware or debugging code.4. Flexible Connectivity: The rows of pins on both sides of the wireless development board are designed to make the connection of external devices easy and fast, providing developers with a wide range of interface options.5. Wide Development Support: Wireless development module is compatible with a variety of development environments such as for NodeMCu, etc. Rich resources can be obtained from official websites such as for ESPRESSIF, for Ai Thinker, etc, which reduces the threshold of learning and improves the development efficiency.Specification:Item Type: Wireless Development BoardMaterial: PCBSPIFlash: 32Mbit DefaultBluetooth: Bluetooth 4.2 BR, EDR and BLE standardWireless Fidelity: 802.11b, g, nSupport Interfaces: UART, SPI, SDIO, I2C, PWM, I2S, IR, ADC, DACOn Chip Sensor: For Hall Sensor, Temperature Sensor, Touch Capacitive SensorIO Ports: 22pcsSerial Port Rate: 115200bps DefaultFrequency Range: 2412-2484MHzAntennae Type: On Board PCB Antennae, 2dBi GainTransmit Power:802.11b: 17 Plus 2dBm (at 11Mbps)802.11g: 14 Plus 2dBm (at 54Mbps)802.11n: 13 Plus 2dBm (at MCS7)Receive Sensitivity:CCK, 1Mbps: -90dBmCCK, 11Mbps: -85dBm6Mbps (1/2BPSK): -88dBm54Mbps (3/464-QAM): -70dBmMCS7 (65Mbps, 72.2Mbps): -67dBm.Package List:1 x Wireless Development Board