This downloader uses CP2104 USB to serial port chip, and adds ESP8266 automatic download circuit. It is very convenient for users to download programs, upgrade firmware, serial port debugging, etc. to Essence ESP-01/01S, support IDE, ESP8266Flasher and Espressif FLASH_DOWNLOAD_TOOLS download One-click download of software software, no wiring, no need to press any button. The WiFi module will automatically enter the download mode.