This is a High Quality But Low Cost Power Supply By " Baku " China  .This is a Very Cleverly Designed Product .It Has 4 Knobs In The Front Panel .The Extreme Left Side Is The " Current Aka Ampere " Regulator Knob That Can Control The Amps From 0 ~ 1 Amps ,The Next Knob Has Amazing Feature It has 6 Selections " Fixed Out Selection of 1.5 Volts , 3.6 Volts , 4.8 Volts , 6 Volts And  7.2 Volts "  It Also Has a Selection That Once Selected The User Can Set Variable Voltage From 0 ~ 15 Volts From The Third/Forth Knob ,The Third Knob Is The Voltage Fine Adjustment Knob And The Last Fourth Knob Is The Coarse Voltage Selection Knob .Kindly Note That The 3rd And 4th Knob Only Function If The Second Know Is On 0 ~ 15 Volts Selection Tab .Positive , Negative And Ground Knobs Are Provided In The Front  .Voltage And Current "  Ampere " Is Visible In The Top Of The Front Panel Using Seven Segment LED Thats Red In Colour  .This Product Comes With a Cable Set Used For Mobile Phone Technicians And Also People Into Making Electronic Projects .Very Low Cost DC Regulated Power Supply With Amazing Features  .  

Warranty : No Warranty [ But 100% New/Original And Dead On Arrival Warranty ]