Features:It can be used in theelectronic circuit such as the operational amplifier, digital logic circuit andso on.Energy-saving and efficiency, over 80%power, 40% higher than other liner power supplies on market.Intelligent temperature control, adjustablefan revolving speed based on load power, noise reduced and life prolonged.Quick reaction, microsecond load, fastreaction.Specifications:Model: STP3005HFrequency range: 50/60HzLoad Regulation: ≤0.3%+5mVRipple: ≤5mVrmsCurrent Display Accuracy: LED 1%2 byteOperating Temperature: 0℃~ +40℃Storage Temperature: -10℃~ +70℃Storage and Operating Humidity:≤80%RHAltitude: ≤2000mPollution Degree: 2Size: 215x85x130mm/8.5x3.3x5.1"Front Panel:(1) Model of Sky top power(4) Current meter: display the output current value(5) Current indicator(7) Output current course and fine knob(8) Output "+" and "-" terminal(9) Power switch: control the power(10) Ground (Earth terminal)Operations:(2) The limiting value of the outputcurrent is 5A (but it is different with the models), you must disconnect thepower immediately when it is over load (the over load indicator (5) is on).(3) Setting of current limitingMake sure the maximum safe current ofoutside load.Use a short-circuit wire to short thecurrent terminals (+) to (-).Adjust the current knob to till the CCindicator on.Adjust the current knob to the desiredampere.After setting the current value cover load protection.Then do not change the current control knob.Take off the short circuit wire. It isstandby status now.(4) The equipment is used in a manner notspecified by the manufacture; the protection provided by the equipment may beimpaired.Safety and Maintenance:You should keep this unit in the dry andgood ventilation place after using. Disconnect the power cord if you don't useit for a long time.Do not put device on moist or wetbackground.The device is designed for indoor use only.Do not turn out for any extremetemperatures of direct solar radiation or extreme humidity or wetness.Replace defect fuse only with the originalvalue fuse, please avoid short circuit of fuse and holder. The fuse is locatedon the rear panel adjacent to the power cord receptacle.Please take care of good temperature ventilation.Do not block the ventilation holes in the rear and side panel, as this willincrease the internal temperature.Please keep the device out of children.Do not put any liquid near of the unit toavoid short circuit.Do not place the system near of strongmagnetic fields.Before operation the system must betemperature stabilized to avoid humidity.Opening of the system and service is onlyallowed qualified service personal.Package Includes:1 x Power Supply.