Specification: _x005f_x000D_ Power supply voltage: DC 5V (Micro USB port 5V input) _x005f_x000D_ WiFi: supports 802.11b/g/n/e/i, supports Station, Softap, Softap+STA modes, and 802.11n _x005f_x000D_ On board 0.96 inch OLED display _x005f_x000D_ Size: 62 * 27 * 3mm/2.44 * 1.06 * 0.11 inch _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ The power supply voltage should not exceed the maximum withstand voltage of the module, otherwise the module will be damaged. _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. Stable Data Transmission: The main body of the module is the ESP8266WIFI module, which uses a USB to serial chip CP2102 to expand the Micro USB interface on the periphery. It can be directly connected to a computer through USB for debugging, and data transmission is fast and stable. 2. Full WIFI Functionality: The module has full WIFI functionality, supporting IEEE802.11b/g/n/e/i protocols and a complete TCP/IP protocol stack, making it a versatile solution for a range of applications. 3. Multiple WIFI Modes: With support for Station, Softap, and Softap+STA modes, this module is suitable for a variety of projects, and it supports 802.11n for faster speeds and greater range. 4. Integrated OLED Display: This module comes with a built-in 0.96 inch OLED display screen, providing real-time display of system status and making it easy to use and monitor.