MCH-303D-II led power supply: 1.0-30V/3A dual variable output ... .5V/2A fixed output MCH LED Power Supply,MCH-303D-II LED Power Supply,0-30V3A continuously variable Specifications: Voltage 0 ... *Specifications are subject to change without prior notice. MCH-303D-II led power supply,0-30V/0-3A varialble dual output ...