KNACRO Waterproof DC to DC 12V to 24V Step up Converter 12V to 24v 1A 24W Voltage Boost Converter Car Power Supply Voltage Regulator Transformer Module 12V to 24V 1A

We have checked all products before delivery to make sure the products are on working conditions, but we cannot 100% guarantee the items when shipping to you. Any problem please feel free to contact us through Amazon Email System and we would be happy to help you. Thanks! Applications: Widely used on Bus, CMB, large trucks, motor, GPS navigation, solar power,bus display, taxi advertising screen, car audio, LCD TV, LED, MP3, MP4, car DVD, hard disk player,monitoring system,etc. Specification: * Input Rated Voltage: 12V DC * Input Voltage Range: 10-15V DC * Output voltage: DC 24V 1A 2A 3A * Output Rated Power: 24W 48W 72W * Ripple Wave: 450Mv * Voltage Regulation: Less Than 1.5% * Load Regulation: Less Than 2% * Operating temperature: -40?~ +85?, when temperature more than 60?,please make lower power, or enhance heat dissipation * Fixing Hole Diameter: 5.3mm(0.2 inch) * Hole Center Diameter: 56mm * Size: 66mm x58mm x 23mm * Net Weight: 136g * Efficiency: 97% (half load); 95% (full load) Kindly Note: Over-current protection, over-temperature protection, short-circuit protection This unit with no reverse polarity protection,please install the positive wire and negative wire correctly or the device will be damaged. The wiring instructions : Input: red (+) black (-) Output: yellow (+) black (-)