How efficient is this power supply in terms of energy conversion, and does it have any built-in protection against power surges?

The power supply has a high efficiency of over 80% and can withstand a 300VAC surge input for 5 seconds.

Questions & Answers: Analog Technologies ALRS12V5AT 60W Switching Power Supply Switch AC 110V/220V to DC 12V 5A Switching Converter for 3D Printer, Computer, Car Stereos, LED Strip

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Item#: 9SIBRAJJZX5409
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Analog Technologies ALRS12V5AT 60W Switching Power Supply Switch AC 110V/220V to DC 12V 5A Switching Converter for 3D Printer, Computer, Car Stereos, LED Strip

Input Voltage Range: 90V ~ 264VAC;
AC Input Range Selectable by Switch;
Output Current: 5A;
High Efficiency: >80%;
Withstand 300VAC Surge Input for 5s.

$10^.00 –