welcome to my store , Hope you have a pleasant shopping trip! Features:It is a DC-DC Step Down Power Supply Module 12A CVCC Adjustable Buck Voltage Converter 4.5V-32V to 1V-30V.Specifications:1>.Model: DC-DC Step Down Power Supply Module 2>.Input voltage: DC 4.5-32V 3>.Output voltage: DC 1-30V 4>.Output constant current range: 0.3-12A(The default output constant current is 3A) 5>.Output rotating light range: 0.1-5A(The default turning current is 0.3A) 6>.Work temperature: -40~85 7>.Work Frequency: 380KHz 8>. Conversion Efficiency: 97%(Max) 9>.Size: 70*52*50mmPackage List:1 X DC-DC Step Down Power Supply ModuleNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. It is a DC-DC Step Down Power Supply Module 12A CVCC Adjustable Buck Voltage Converter 4.5V-32V to 1V-30V. Support reverse connection protection. Support short circuit protection. Support over temperature protection. The output voltage is continuously adjustable. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. It is a DC-DC Step Down Power Supply Module 12A CVCC Adjustable Buck Voltage Converter 4.5V-32V to 1V-30V. Support reverse connection protection. Support short circuit protection. Support over temperature protection. The output voltage is continuously adjustable. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.