About this item Isolated Precision Buck Power Supply Module, wide voltage range input with overload, short circuit, and over-temperature protection. Ultra-small size and high efficiency. Input voltage range: AC 120V 100-264V. Frequency range: 47-63Hz. Output voltage: 5V ±1%. Output current: 3A 3000mA. Ripple: less than 60mVp-p. Output accuracy: ±1%. Voltage regulation rate: ±1%. Dimensions: 3.43 x 1.81 x 0.98 inches.