Ventisonic&reg; LM2596S DC-DC Step-down Adjustable Power Supply Module 100% brand new Ventisonic LM2596S DC-DC Step-down Adjustable Power Supply Module IN + input positive IN-enter negative; OUT + output the positive OUT-output negative Input: DC 3V to 40V (input voltage must be higher than the output voltage to 1.5v above can not boost); Output: DC 1.25V to 35V voltage continuously adjustable, high-efficiency maximum output current of 3A Adjustment using the 3296 adjustable resistance; Normal Operation Tempretaure is 25; Package Included: 1 x LM2596S Step Down Module