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ESP01 Programmer is a USB-to-serial adapter designed specifically for flashing and programming ESP8266 ESP-01 modules. It features a CH340 or CP2102 chip for stable USB communication with computers. The module provides a 3.3V output, suitable for safely powering ESP-01 modules. It includes built-in reset and flash buttons for easy firmware updates and debugging. The plug-and-play design allows for direct connection without needing additional jumper wires. It is widely used for IoT applications where firmware updates are frequently required. The module supports Arduino IDE and other development platforms, making it a must-have tool for ESP8266 development.