Key Features ✅Extensive Range of Input Voltage: This DC power supply has an input voltage of 115V±5V. The wide voltage allows it to be used for wider purposes, so it is convenient for the users. ✅High Efficiency: The entire efficiency rate of this power supply is higher up to 70%, which allows this power supply to output stable current quickly. ✅Easy to Move: This power supply is very small and lightweight. It measures 23*7*13cm/9*2.8*5.1inch and weighs 1.3kg/.2.87lbs, so an adult can easily move it. ✅Constant-current and Constant-voltage Indicators: There are two indicators on the electronic screen of this power supply, they are the constant-current ( c.c) indicator and the constant-voltage ( c.v) indicator. These two lights allow users to easily and quickly understand the constant current and constant voltage of the power supply. ✅Precise Spiral Buttons: The output voltage and current is controlled by two variable spiral buttons. These two resistors can adjust the voltage and current precisely. So you can adjust the right voltage and current according to your needs. Application This power supply is suitable for research institutes, laboratories, and factories, where the DC stable power supply is needed. Specification Model: NPS306W Net Weight: 1.3kg/.2.87lbs Gross Weight: 1.6kg/3.53lbs Package Size: 11 *17 * 29cm/4.33*6.69*11.42inch Product Size: 23*7*13cm/9*2.8*5.1inch Input Power: AC 220V, 50Hz Output Voltage: 0-30V Output Current: 0-6A Output Power: 180W Working Temperature：0 ℃ - 40 ℃ Relative Humidity: < 80% RH Storage Temperature：-10 ℃ ~ 70 ℃ Relative Humidity: < 70% RH Constant Voltage Operation: Voltage Stability：0.1% Load Stability: 0.2% ± 3MV Ripple Voltage: ≤ 0.5% Vp-p **Continuously Adjustable from 0 to Rated Voltage Constant Current Operation: Current Stability: 0.1% ± 3mA Ripple Current: ≤ 0.5% Vp-p Recovery Time: ≤ 500 μ s Temperature Coefficient: ≤ 100ppm / ℃ **0 to Rated Current Continuously Adjustable Head Display : Three Window Digital Tube Display: Voltage, Current, Power Display Accuracy: 0.5% + 3 Words Display Staging Rate: Voltage 0.1V, Current 0.01A, Power 0.1w/1w Package Included 1 * DC Power Supply 1 * Power Cord 1 * Output Line 1 * Operation Manual