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3V operating voltage
1 X MQ3 Alcohol Detector Gas Sensor
supporting WiFi and Bluetooth
USB male to become DIP2
intuitive display the charging state
Mini LM2596S Step Down Buck DC-DC Converter Module 4.5V-28Vin to 0.8V-20Vout 3A max compatible 3V operating voltageThis is a mini LM2596S DC DC buck converter step down power module with a size of 22x17x4mm, capable of driving a load up to 3A with high efficiency, which can work with Iteaduino UNO, other mainboards, and basic modules. It can also be used in DIY portable power, monitor power supply, buggy power, camera power supply, car power, communications equipment supply, and other applications demanding for size and weight (such as aviation models, etc.).
