DCDC Power Supply Module 9 v12v24v36v48v60v72v to 3.3 v5v3 Voltage Regulator Converter Module for Phone Mobile Power 1. Applicability: Mini 3A dc-dc power supply module, suitable for USB5V/3.3V powered devices such as mobile power supplies and mobile phones.2. Reverse connection protection: The power regulation module has a reverse connection protection function, which is safer to use.3. Wide input voltage range: 8V-80V, can be used as a voltage regulator 5V/3A, 3.3V/800mA, transfer efficiency up to 88%.4. High Quality Plastic: The dc-dc power module is made of high quality plastic material, durable, great choice for DIY enthusiasts.5. Good performance: This dc-dc power module has good working efficiency, strong practicability and can be used for stable DIY power supply. Specification: Item type: DC-DC power module Material: plastic Size: approx. 42 x 32 x 12 mm/1.7 x 1.3 x 0.5 inch Input : 8V-80V Output: 5V/3A output: 3.3V/800mA protection function: reverse connection protection Conversion efficiency: 88% (maximum) Operating temperature: -40-+85Application: USB 5V/3.3V powered devices such as power supplies mobile, mobile phones, tablets etc. Package List: 1 x Power Module