Input voltage: 4-38V Output voltage: 1.25-36V continuously adjustable Output current: adjustable, maximum 5A Output power: maximum 75W Working temperature: -40~+85 degrees Working frequency: 180KHz Conversion efficiency: up to 96% Short circuit protection: Yes (limit current 8A) Over-temperature protection: Yes (automatically shuts down the output after over-temperature) Input reverse polarity protection: None, (please insert a high-current diode in series with the input if necessary) Installation : 4 3mm screws (screws not included) Wiring : wiring terminals or welding terminals, V-IN is input, V-OUT is output Module size: 51.2mm long, 26.2mm wide, 15mm high Factory printing batch number is different Colour:Red Material:PCB+electronic components Package Contents: 4 x DC to DC Power Converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.