Check the listing for details. 9-36V step-down USB 5V transformer dual output voltage regulator board [2pack]. Condition: New. Listed at 67.99 USD. Power: DC 9-36V; Output voltage: 5-5.3V; Output power: 18W to 30W (input DC 9-24V, output 5.2V / 6A; input DC 24-32V, output 5.2V / 5A; Input DC 32- 36V, output 5.2V / 3.5A) ■ Input port: 5.5mm x 2.1mm DC socket and wiring terminal can operate the module in each method and connect at the same time. Output port: USB and wiring terminal can output power at the same time. ■ High efficiency conversion: Module adopts new technology synchronous rectification. This clearly improves conversion efficiency and expands the operating voltage and current. ■ Mini and portable: 63 x 2 x 10mm, suitable for various narrow installations and small cases. ■ Application: DIY is remodeled as a USB 5V antihypertensive converter, and power chargers are remodeled to Raspberry PI 4 B.