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DFRobot DFR0140 Breadboard Age Regulator (Assembled), 5V/3.3V
USD 14.99
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Input Voltage: 6-12vdc, recommended 9V wall power supply(power Jack); 5V (USB type-b) Output Voltage: 3.3V/5V Output current: 500mA On/off switch Power status LED Need a clean way