wholesale On Board Converter Model: Single: NSD05-S / NSD10-S / NSD15-S Dual: NSD10-D / NSD15-D Wattage: 5W~15W Features: DC DC Converter Power Supply, 4:1 wide input range 1~1.5KVDC isolation by models Built-in remote ON/OFF contro DC DC Converter Power Supply Low cost, high reliability Q: Notes on choosing a switching power supply? A: To increase the reliability of the S.P.S., we suggest users choose a unit that has a rating of 30% more power than actual need. For example, if the system needs a 100W source, we suggest that users choose a S.P.S. with 130W of output power or more. By doing this, you can effectively boost the reliability of the S.P.S. in your system. Q: What about the lead time and shipment? A: Standard ( popular model ) can be ship within 2 day, bulk order can be delivered within 10~35 days. For shipping, we often use DHL, FedEx, UPS, and TNT. For bulk order, we recommend to send goods by Air or by Sea to save your transportation cost. Q: What is the warranty for your Power Supply? A: 2 ~ 7 years based on different series.wholesale On Board Converter website:http://www.jiangglobal.com/dc-dc-converter/on-board-converter/