Features 1、POWERFUL WIRELESS FUNCTION: Adopts for ESP WROOM 32 module, integrating Bluetooth 4.2 and WiFi dual mode wireless telecommunication function, which can realize fast and stable transmission, and meet the demand of wireless communication in multiple scenes. 2、EFFICIENT DATA TRANSMISSION: The USB to serial chip extends the MicroUSB interface, which can be directly connected to the computer by USB, and the output data transmission is stable and fast, which can meet the needs of high speed data transmission. 3、CLEARLY VISIBLE DISPLAY: For ESP32 development board is equipped with a 0.96 inch Organic Light Emitting Diode screen, through which users can view the module's operation status in real time, making operation easier. 4、CONVENIENT POWER SUPPLY: WiFi bluetooth wireless board can use Micro USB port 5V input as power supply, and external battery for power supply, the module can also charge the battery, adapted to a variety of use environment. 5、WIDE FREQUENCY RANGE: WiFi frequency range of 2.4‑2.5 GHz, can be seamlessly switched to meet the vegetarian wireless network needs. Its WiFi protocol and Bluetooth protocol are both in line with international standards, ensuring the stability and compatibility of the device. Specification Item Type: for ESP32 Wireless Module Material: PCB Onboard Screen: 0.96 Inch Organic Light Emitting Diode Screen WiFi Protocol: 802.11 b g n d e i k r (802.11n, Speed up to 150 Mbps), A MPDU and A MSDU Aggregation, Support 0.4us Guard Interval WiFi Standard: FCC CE TELEC KCC Frequency Range: 2.4-2.5 GHz Bluetooth Protocol: Bluetooth V4.2 BR EDR and BLE Compliant Bluetooth Sound: CVSD and SBC Sound Package List 1 x Module 2 x Pins 1 x Adapter Cable