Features:  ● Have complete operating protection function.  ● Highly efficient, low ripple, small volume, light weight.  ● Double display voltage, current, and high precision.  ● Voltage stabilization, current limiting, simple operation.  ● Dual voltage input and convenient choice.  ● Temperature control fan heat dissipation, low noise.  ● Double potentiometer more precise adjustment.  ● Fine adjustment of current and voltage.     Specification:  Input voltage: AC 110V/220V; 50/60Hz.  Output voltage: 0 ~ 30V.  Output current: 0 ~ 10A.  Voltage resolution: 100mV.  Current resolution: 10mA.  Output Voltage ranges from 0 to rating voltage with continuous adjustment.  Voltage regulation: Line regulation<5mV. Load regulation<5mV.  Recovery time<500us(50% Load change, minimum load 0.5A).  Ripple & Noise<5m Vrms, 100m Vp-p.  Temperature coefficient<100p pm/C.  Output current ranges from 0 to rating current with continuous adjustment Current regulation line regulation<3mA. load regulation<3mA. Indicator Meter.  Voltage display precision: +-(0.5% of rdg + 3 digits).  Current display precision: +-(0.5% of rdg + 3 digits).  Operation Temperature & Humidity: 0 ~ 40 C, RH<80%.  Storage Temperature & Humidity: -10 ~ 70 C, RH<70%.     Package Contents:  1 * DC Power Supply.  1 * Power Cable.  1 * Output Line.  1 * Instruction Book