ITEM NAME:LM2596 DC-DC Adjustable Buck Converter Step Down Power Supply Module LED Display Descriptio n Description: With voltage display function, high displayed accuracy. Button to switch measurement of the input or output voltageï ¼Å’and LED indicates the current measurement of the input or output voltage;The nixie tube can be turned off by another button. Mentioned in these states are able to be memorized, is not lost even if the power is disconnected. Continuously adjustable output voltage range of DC3-37V, DC8-40V input voltage range. High efficiency,150KHz fixed frequency internal oscillator. Guaranteed 3A output load current. Thermal shutdown and current limit protection Specifications: Material: PCB Board Color: Picture Color Voltage Regulation Method: PWM Modulation Input Voltage: DC8-40V Output Voltage: DC3-37V Input Current: MAX 3A Switching Frequency: 150KHz Size: 72*38*16mm Package Included: 1 * LM2596 DC-DC Step-Down Module Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! LM2596 DC-DC Adjustable Buck Converter Step Down Power Supply Module LED Display.1 LM2596 DC-DC Step-Down Module. We'd like to settle any problem in a friendly manner. Thermal shutdown and current limit protection. Input Current: MAX 3A. Material: PCB Board. We want to make sure you are happy with our item.