Features:  Standard slim case,height 29mm  Input Volt：180～264VAC  Working temp:-30~+60℃（refer to output derating curve）  Fan-less,cold by air  Protection:Short circuit/Overload  100% aging test  High-efficiency,high reliability Product description A-200AU series product is a 200W fan-less LED display power supply. The input voltage range is 180-264VAC, and the output voltage is 2.8V, 3.3V, 3.8V, 4.2V, 4.5V, 5V, etc. It can be applied to LED display fields such as LED display screen and LED indicator light etc. This series of products are designed for ultra-thin with a height of only 29mm, which can meet the requirements of various cabinets. Super high efficiency, compact shell design and good heat dissipation ensure the long-term stable work of this series of products. Use instructions： 1、please follow the installation instructions when use the power supply。 2、Before power on test run after installation, please check and proofread the wiring on each terminal, make sure that the input and output, AC and DC, positive and negative, voltage and current values are correct, prevent the occurrence of wrong connection, and avoid damaging the power supply and user equipment。 3、Before power on, please use a multimeter to measure whether the live wire, zero wire and ground wire are short circuited, and whether the output terminal is short circuited; it is better to start without load when power on。 4、Do not exceed the nominal value of the power supply when using, so as not to affect the reliability of the product. If you need to change the output parameters of the power supply, please consult our technical department before using. 5、In order to ensure the safety of use and reduce interference, please ensure that the grounding terminal is reliably grounded（ground wire please thicker than AWG18#