![](https://www.botnroll.com/18185-medium_default/esp-01-esp8266-wifi-adapter-3v3-and-5v-compatible.jpg)
Built-in 3.3V voltage stabilizer circuit and level conversion circuit can make 5V MCU easy to use with esp-01 Wi Fi module.
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*Disclaimer: The images are merely illustrative.
Built-in 3.3V voltage stabilizer circuit and level conversion circuit can make 5V MCU easy to use with esp-01 Wi Fi module.
Also, the product can be used for Arduino uno R 3 or compatible board. features:
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Built-in 3.3V voltage stabilizer circuit and level conversion circuit can make 5V MCU easy to use with esp-01 Wi Fi module.