... regulated current: 0~2A, 0~3A, 0~5A Variable DC Power Supply Specifications:1) Model (output voltage, output current, display)a) HY3002E (0~30V, 0~2A, 2 LED ... (0~30V, 0~5A, 2 LED)d) HY5002E (0~50V, 0~2A, 2 LED)e) HY5003E (0~50V, 0~3A, 2 LED)2) Input voltage: 104~127V AC ... (60Hz), 207~253V AC (50Hz ...