KORAD KA6003P - Programmable Precision Variable Adjustable 60V, 3A DC Linear Power Supply Digital Regulated Lab Grade Compact Design with Dual 4 Digit LED Displays and Digital Controls - Switchable power input 110/220v 4 sets of parameters can be stored inside for fast recall Output switch control or Remote Control with a USB or RS232 Connection Circuit protection for over load, short circuit and over temperature. Automatic switching between mA and A display