2Pcs Dc 12V/24V To Dc 9V Power Converter 3A 27W Voltage Step Down

What is this?The DC converter can provide your device with protection against over voltage, overload, over current, over heating, short circuit, etc. It is widely used in multi-functional devices such as cars, ships, trucks, motors, solar panels, LED light strips, screen displays, etc.What will I get?Input voltage:12V/24V(11-36V)Output voltage: 9VOutput current: 3AOutput power:27WProtection Grade: IP67Size: 46 x 32 x 18mm/1.8 x 1.3 x 0.7 inch( L*W*H)Package contains: 2pcs x DC Power ConverterAre there any advantages of the product? The DC converter has a high conversion rate, over current, over voltage, short circuit, over temperature protection, strong anti-interference ability, stable and reliable, strong anti-interference ability, and a conversion rate of up to 94%. IP67 protection level, waterproof, shockproof, moisture-proof and dustproof. Power converter transformer has strong adaptability to the working environment and can output normally in harsh environments of -20°C~85°C. How to use it?Wiring method: Wire Input positive: red wire ; Input negative: black wire ; Output positive: yellow wire ; Output negative: black wire.What should I notice?Do not connect the positive and negative poles of the input terminal of the power converter in reverse, otherwise it will cause damage to the power module.