This series are DC Switching Power Supply with accuracy 3 digital meter. The output voltage can be adjusted from 0 to 30 V and the output current is from 0 to 5A.Feature:Input voltage:AC 220V +/- 10% 50Hz+/-2HzOutput voltage: 0~30V (conti.adj.)Output Current: 0~5A (conti.adj.)Supply Regulation: CV<=1%+10mv>Load Regulation: CV<=1%+5mv>Ripple: 200mV (p-p)Protection: Current LimitMeters Indicator accuracy:3 digital meters accuracy: Voltmeter:LCD +/- 1% + 2 Digits Ammeter:LCD +/- 1% + 2 DigitsOperation Ambient: Temperature: 0~40 degree Humidity: < rh="" 80%="" atmosphere="" pressure:="" 86kpa~104kpa="">Operating Time: 8hr . conti.Size: 85*160*205mmPacking including:1 x STP3005 Power Supply1 pair power output cable1 x Power cable