The NPS-W series is a three-window display mini DC power supply that simultaneously displays voltage, current, and power. This product improves the shortcomings of traditional linear power supplies that are bulky, heavy, and inefficient. Specifications: Color: White / Black (Optional) Plug Type: UK Model: NPS3010W Output Voltage: 030V Output Current: 010A Output Power: 300W WORKING ENVIRONMENT: Input Voltage: AC 230V/115V plusmn; 10%; 50Hz/60Hz Working Temperature: 0~40; Relative Humidity: lt;80%RH Storage Temperature: -10~70; Relative Humidity: lt;70%RH CONSTANT VOLTAGE CV: Voltage Stability: 0.1% plusmn; 3mV Load Stability: 0.2% plusmn; 3mV Ripple Voltage: =0.5% Vp-p 0 to rated voltage continuously adjustable CONSTANT VOLTAGE CC: Current Stability: 0.1% plusmn; 3mA Load Stability: 0.2% plusmn; 3mA Ripple Current: =0.5% Vp-p Recovery Time: =500 mu;S Temperature Coefficient: =100ppm/ 0 to rated current continuously adjustable DISPLAY: Three-window digital tube display: voltage, current, power Display Accuracy: 0.5% plusmn; digits Display Resolution: voltage 0.1V; current 0.01A; power 0.1W/1W SIZE AND WEIGHT: Item Size: Approx. 230 * 130 * 70mm / 9.06 * 5.12 * 2.76in Item Weight: 1372g / 48.39oz Package Weight: 1550g / 54.69oz Package Size: Approx. 29 * 18 * 10.5cm / 11.42 * 7.09 * 4.14in Package List: 1 * DC Power Supply 1 * Power Cord 1 * Alligator Clip Line 1 * User Manual (English)