Arcity 5V 12V 24V Output Switching Power Supply Unit Adjustable for Video Multi Games Machine Console Cocktail CCTV Computer DIY New

It works just fine with a little devise i am building. I would like to know though, whether i put it in 110v or 220v mode it appears to be working fine with 110v. I want to plug it to a 220v source, but i am unsure if the switch is real, because in both modes it works well when plugged to 110v

It's Ok, Good quality and cheap

Would buy again

I have mine set up to power a raspberry pi (5v), case fans (12v) and USB multi-port charging (24v using 24v-rated charging assembly). Have other, similarly designed, dedicated-voltage PSUs running other components. My application is a home entertainment station (arcade, house-shaking jukebox (dedicated 24v/15a supply), charging station, 4 touch screens for sports and whatnot). This device works well in its role. Know your load! When you look at this and wonder if it does 5v/8a, 12v/7a, AND 24v/5a, the short answer is NO. This unit runs a single power rail, so load on any voltage output will affect available amperage on the others. The reason you see different power ratings at each voltage 5v/8a (40 watts), 12v/7a (84 watts), or 24v/5a (120 watts), is due to efficiency and energy loss during conversion, as you generate more resistive heat by dropping 120v to 5v than 120v to 24v. Each of the individual voltage/amperage ratings is the theoretical max when ONLY that voltage is used. Anyway, understand that you aren't going to get 40+84+120 = 244 watts out of this thing. You'll need to do the math for your application, if you are trying to push the upper bounds of this power supply. Or, if you plan on maxing at each voltage, consider dedicated power supplies. If you keep max load under 80% or so for the unit, you'll get less heat and longer service life.

I have two of these power supplies. They are great for little projects. The voltages are stable. No over heating. Audibly quiet. Have had any issues with noise in the RF spectrum.