KORAD KA3003D-3S - Precision Variable Adjustable 30V, 3A Triple DC Power Supply Digital Regulated Lab Grade Triple Output supply with 2 30V-3A Adjustable channels and 1 Fixed 5V-3A Channel 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 on both Adjustable Channels Output switch control Circuit protection for over load, short circuit and over temperature. Automatic switching between mA and A display