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Small DC-DC voltage converter board with working indicator, easy to recognize the working status DC 1-5V input and 5V fixed voltage output, just provide 2 AA battery can obtain 5V 0.5A power supply High power conversion efficiency up to 96% save energy Input Voltage: DC 1V-5V Output Voltage: Dc 5V Output Current: 500mA Maximum Coversion Efficiency: 96%