Top Positive Review for Switching Power Supply on Banggood Australia|Shopping Australia

56% OFF AC-DC Isolated AC 110V / 220V To DC 3.3V 800mA Constant Voltage Switching Power Supply Converter Module US$4.39 US$9.99 View It

Overall:

BazsiBoy 20/06/2018

Items are as described. There is neither sign nor marker on the shell to identify wires of input and output. We connect it to high voltage, so 110-220V AC input should be marked. There is a small sticker with hand written "3.3V" sign to distinguish 3.3V version and 5V version. I ordered both type from this seller. This sign is very appreciated! I found that red and red wire pair is input, these wires should be connect to 110-220V. black and red wire pair is output. If you are not sure, just open shell and check electronic parts. Be aware that PCB is fixed into box some glue. In my case component side of PCB was visible. I have not tested it yet.

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