AC to DC 12V 3A Buck Converter Step Down Power Supply Module 10 28V Input Voltage Features:<br> 1. Highly integrated SMD components for high stability and reliability.<br> 2. Flame retardant plastic housing, safe and reliable.<br> 3. IP67 waterproof and dustproof, easily adapt to various working environment.<br> 4. With overvoltage, overcurrent, short circuit protection.<br> 5. Suitable for car screen, monitor camera, fan, water pump, motor, router, etc.<br> Specification:<br> Input voltage: AC 10-28V<br> Output voltage: DC12V0.25V<br> Output current: 1A/2A/3A/5A (Optional)<br> Output power: 12W/24W/36W/60W<br> Continuous working current: 2A/3.5A<br> Conversion efficiency: 96%<br> Protection level: IP67<br> Working temperature: -20~80<br> <br> Package list:<br> 1 x Converter<br> Note:<br> 1. When the input voltage is AC10-14V, the output current is less than 1A; when the output voltage is 12V, it is not recommended to output with load at this time, because the conversion efficiency is low at this time; the output 12V after loading will cause the output to be unstable and big output fluctuation.The load is too big to start!<br> 2. When the input voltage is AC15-AC28V, the conversion efficiency of the module is 90%, and the output voltage can maintain DC12V0.25V. At this time, the 3A module can support long-term work within 2A, and the 5A module can support long-term work within 3.5A!<br> 3. The input voltage also supports DC input, and the DC input range is DC16-36V. DC input conversion efficiency is low, the conversion efficiency is 83%-90% maximum; when DC input, the input terminal is not divided into positive and negative poles!