Specification: _x005f_x000D_ Specification (optional): without module, with ESP-12E module, with ESP-12F module _x005f_x000D_ Working voltage: 5V _x005f_x000D_ Level signal: 3.3V/5V compatible _x005f_x000D_ Baud rate: default to 115200, modifiable through AT command _x005f_x000D_ Application scope: WiFi remote monitoring/control, smart toys, sensor networks, wireless cars and other devices _x005f_x000D_ Product size: 45 * 25 * 5mm/1.77 * 0.98 * 0.19inch _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 Module 1. Compatibility: This adapter module is designed to work with ESP-12E/12F modules, making it easy to integrate into your WIFI projects. 2. Three Versions Available: You can choose from three versions of this adapter module: with an ESP-12E module, with an ESP-12F module, or without a module. 3. Voltage Conversion Circuit: The adapter module has a 3.3V conversion circuit that allows it to be used with 5V microcontrollers, making it compatible with ESP-01/01S WIFI modules. 4. High-Speed Data Transfer: With a default baud rate of 115200 and the ability to modify the baud rate using AT commands, this adapter module enables fast and efficient data transfer.