Features: Input Voltage: DC12V-24V, Output Voltage: DC5V, Output Current: 5A or 10A or 20A or 30A or 40A can be select. IP67 waterproof level, anti-dust, anti-shock protections and heat dissipation, working temperature -40-85. Small in size and lightweight, this voltage reducer is easy to use, its aluminum case ensures durability and protections. Intelligent chip protections, with over current, over voltage, over temperature and short circuit protections. Suitable for various 5V electronic product such as LED lights, speaker, driving recorders, etc. Specifications: Material: Aluminum Alloy Current: 5A, 10A, 20A, 30A, 40A(optional) Size 5A: Approx. 5.8x2.4x2.1cm or 2.28x0.94x0.82inch Size 40A: Approx. 10x7.8x3.5cm or 3.93x3.07x1.37inch Size 10A, 20A 30A: Approx. 7.5x7.5x2.7cm or 2.95x2.95x1.06inch Input: DC12V-24V Output: DC5V 5A or 10A or 20A or 30A or 40A can be selected Waterproof Level: IP67 Working Temperature: -40-85 Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1x Power Converter