30W Universal Power Adapter,Etopgo AC Adapters DC Power Supply Multi Voltage 3V 4.5V 5V 6V 7.5V 9V 12V 2A With 8 Tips For Electronic Devices LED Strip Lights CCTV Camera TV-Box Speakers Router Tablet

Safe, works well, really useful for all sorts of items, versatile and worth the money

I own several of these devices from different manufacturers now; they are incredibly useful for saving you money on batteries (to say nothing of the time spent swapping them over each day), eg especially around Christmas time when you may have multiple battery operated lights on the go; replace those with one of these and life gets a lot simpler.As well as coming with 7 assorted industry standard terminator heads (including one micro USB but, sadly, no USBC, for which one star off) it also has one with screw down terminals correctly marked as positive/negative, meaning that you can easily wire in whatever you want; I've got one of these set up with crocodile clips at the end so that I can quickly power up and test a range of electrical gizmos. You'll have to buy the crocodile clips yourself, though!This unit offers you a choice of 3, 4.5, 5, 6, 7.5, 9 & 12V outputs; I've tested them all with my multimeter and they all deliver within the acceptable range, all slightly over (eg 5V comes out at 5.3V, which is fine).All in all, for an undiscounted £9.97, not bad at all.

Great serviceand product.

The product arrived used and damaged. I did not realise until I opened it months later

Well, it brought our old keyboard back to life. Long live the keyboard.

Setting : measurement3.0V : 3.29V4.5V : 4.70V5.0V : 5.22V6.0V : 6.19V7.5V : 7.68V9.0V : 9.08V12.0V : 12.17VI ordered this to power a second-hand cross trainer machine (6V). There's a little key included to move the dial between the various voltages. The dial is rather stiff, but that's a good thing as it reduces the potential of changing settings by accident and damaging equipment. The interchangeable ends are welcome, particularly the one with screw terminals, as that could be used on electronics projects.I measured the voltages of the various settings with my multimeter, and there is some slight over-voltage.

I keep one of these handy when I volunteer at the local Repair Café. I never know what’s coming in to be fixed so this is perfect for powering all sorts of equipment.The output isn’t very well regulated; voltages read high until a load is connected but this is fine and normal for a cheap power supply. I still recommend this gadget.

I got this to use with a Echo Dot 3rd gen and it works perfectly.After the original plug went missing I have been looking at replacements and had considered using one of the USB to barrel jack cables. Unfortunately these don't have great reviews as they can't draw enough power. Although there are certified adaptor plugs available they are double the price where as this was priced at £8.97 which I thought was worth a punt. Had it not have worked the adaptor is versitile enough that I could have used it elsewhere.As it turns out all I had to do was set it to the full 12v and match the correct tip size and everything worked first time. My echo dot is now up and running again with no issues. Exactly what I needed.