Features: brand new and high quality Parameter --- input voltage range for DC 5V-32V; Output voltage range for DC 5V-47V; Maximum output current 3A. Display --- the LED shows the input / output voltage by touching the sensor switch. 3. Adjustable output --- the output voltage can be adjusted by the voltage knob. Output on / off switchable --- the output voltage can be turned on / off by touching the sensor switch, when the output is off, the display will turn off. for Protection --- input reverse connection for protection; Short circuit for protection. At the same for time, the voltage plate is also equipped with an acrylic sleeve kit for easy use. Specifications: Product name: for DC power supply voltage regulator board Input voltage: 5V-32V Output voltage: 5V-47V Output current: 3A (maximum) Product size: approx. 99x60mm/3.9x2.36in Color ：blue Material: PCB + metal Package Includes: 1PC x for DC Power Supply Voltage Regulator Board 5pcs x Male Banana Plug 1PC x Screwdriver note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.