1、The product improves the shortcomings of the traditional linear power supply, which is bulky and inefficient, and has a high safety factor. 2、NPS-W series is a three-window display micro DC power supply, which can display voltage, current and power at the same time. 3、The output voltage and current of the product can be controlled and adjusted by coarse and fine adjustment potentiometers respectively. 4、The product provides more convenience and accuracy for the adjustment of voltage and current. 5、The power supply is featured with high quality material, good performance and sturdy appearance. Item Type: DC stabilized power supply Model: NPS306W 3digits Working Temperature: 0℃~40℃ Relative Humidity: <80%RH Storage Temperature: -10℃~70℃ Relative Humidity: <70%RH Output: 0-30v / 0-6A The Header Shows: 0.4 inch red three digital display Display Resolution: 0.1V/0.01A. Display Accuracy: 0.5%±3 characters (Can be customized to 115V ± 10% 60Hz) 1 x DC Stabilized Power Supply 1 x Crocodile Clip Test Line 1 x Power Line 1 x User Manual