HQTECHFLY Inc. is a professional manufacturer and exporter that is concerned with the design, development production and marketing of Arduino, Raspberry Pi and STM32. Our Dream is to make the best price and best quality produce for customers. So we would like to receive your valuable suggestions for our products and we can improve them for you. Feature 1. Based on the ESP-8266EX. 2. Arduino Compatible, you can use it on Arduino IDE. 3. 1 x ADC Input pin (0-3.3V). 4. 11 x Digital I/O pins. 5. Power supply: Max 24V input, 5V 1A output. 6. OTA Wireless Upload. Package Included 1 x OTA D1 CH340 WiFi UNO Development Board
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