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1, USB to serial TTL chip: CH340G, CH340C. Please make sure your PC has installed driver before you use it to flash firmware
2, ESP-01 wifi module can be directly plugged into the female pin header without any connection wires, it is plug and play
3, The red usb programmer module is without Reset button, while the blue ESP Prog V1.0 module has Reset button, this button is used for debugging and downloading
4, The blue ESP Prog V1.0 USB programmer module has ESP8266 auto-download circuit, it is very convinent for user to download program, update firmware, and debugging
5, What you will get is: 2pcs USB to ESP-01 CH340G Programmer module, 1pc ESP Prog V1.0 USB to ESP8266 CH340C Downloader Module, 6pcs ESP-01S 4MB Wifi Module
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2pcs USB to ESP-01 CH340G Programmer + 1pc ESP Prog V 1.0 USB to ESP8266 CH340C Programmer Downloader Module + 6pcs ESP-01S 4MB WiFi Wireless Serial Transceiver Module
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First Listed on Newegg
July 08, 2025
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Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.