This is high performance DC to DC Step Down Adjustable Power Supply Module. Based on Newly developed LM2596S Wide range Switching Regulator.Size: Approx. 43 x 20 x 14 mmColor: As the picture showFull load Temperature rise: 40Load Regulation: ? 0.5%Voltage Regulation: ? 0.5%Dynamic Response speed: 5% 200uSInput voltage:4.50-40VOutput voltage:1.50-35V(Adjustable)Output current: Rated current is 2Amaximum 3A(Additional heat sink is required)Conversion Efficiency: Up to 92% (output voltage higher the higher the efficiency)Switching Frequency: 150KHzRectifier: Non-Synchronous RectificationModule Properties: Non-isolated step-down module (buck)Short Circuit Protection: Current limiting since the recoveryOperating Temperature: Industrial grade (-40 to +85 ) (output power 10W or less)Package included: 1 x LM2596S DC-DC adjustable power step-down module