2 year ! DC Output Voltage:0 - 80V adjustable; Output Current:0-3 A adjustable; Incoming wire stability:±5 Percent ; Ripple and noise :180mVp-p; Efficiency:>85 Percent ; AC input voltange range: AC 110V (100V-120V ) / 220V ( 200V-240V ) . AC input current :5A 110V / 2.5A 220V ; Overload protection: 105 Percent -150 Percent cut off output; Reset: Self reset; Start,Rise,Hold time:200ms,50ms,30ms; Operating temperature: -20 Degree C - +50 Degree C; Power fan working temperature: 40 Degree C ± 5 Degree C. Working humidity: 20 Percent -90 Percent RH Dimensions: 214 * 115 * 48mm / 8.425 * 4.488 * 1.890 in (L * W * H); Weight: 832G / 1.834lb. Use and precautions: 1. In-door use only, for this switching power supply is not waterproof. 2.Before using, please select the input voltage 110V/220V according to your local voltage, to avoid damaging, switch is at right side of the item. 3. Pay attention to positive and negative, do not reverse. 4.If use motor, fan and other inductive load, please pay attention to the load's maximum starting current parameter. This parameter shall not be higher than the power supply's max. current. 5.Otherwise it may damage the power supply. Or allocate the soft starting protection circuit for the load to absorb the impact current. 6. Output voltage 0-100 Percent continuously adjustable, with digital output display; output current is not adjustable, limit the highest value; so in the choice, please according to the actual needs. 7. The internal components of the power supply are the best quality, the factory has to undergo a rigorous test, non-general cheap power supply comparable. Can be used for high-end industrial equipment power supply. Package Included: 1*DC Adjustable DC Switching Power Supply