Specification: _x005f_x000D_ Working voltage: 5V _x005f_x000D_ SPI Flash: default 32Mbit _x005f_x000D_ Serial port speed: 115200bps _x005f_x000D_ Frequency range: 2412-2484MHz _x005f_x000D_ Bluetooth-compatible protocol: Bluetooth-compatible 4.2 BR/EDR and BLE standards _x005f_x000D_ WiFi protocol: 802.11 b/g/n _x005f_x000D_ Antenna form: onboard PCB antenna with a gain of 2dBi _x005f_x000D_ Supported interfaces: UART, SPI, SDIO, I2C, PWM, I2S, IR, ADC, DAC _x005f_x000D_ Product size: about 50 * 25 * 10mm/1.96 * 0.98 * 0.39inch _x005f_x000D_ Packaging weight: 10g _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x Development Board 1. Versatile Connectivity: ESP32-WROOM-32 is a general-purpose Wi-Fi+BT+BLE MCU module with low-power Bluetooth-compatible and Wi-Fi connectivity, making it ideal for a wide range of applications. 2. High-Speed Data Transfer: Features integrated SPI flash memory and supports high-speed data transfer for efficient performance. 3. Large Wireless Coverage: Supports large wireless communication connections through Wi-Fi and can directly connect to the internet via routers for added convenience. 4. Easy Signal Detection: Allows users to easily connect their mobile devices for signal detection and analysis through Bluetooth-compatible connectivity.