About this item Isolated Precision Buck Power Supply Module, features a 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: 12V ±1%. Output current: 1A 1000mA. Ripple: less than 60mVp-p. Output accuracy: ±1%. Voltage regulation rate: ±1%. Size: 2.64 x 1.22 x 0.75 inches.