This is an excellent power supply. It's a switching DC supply, which makes it compact, lightweight, and highly efficient. Its slim design allows it to fit into power strips without obstructing other outlets. The output is regulated, providing a stable 9V with a maximum current draw of 1000mA (1 Amp). It features a 5.5mm/2.1mm barrel jack with a positive tip. This supply can work worldwide with 100V - 240V AC wall power, and you only need an inexpensive plug adapter. New! This adapter is now CE / UL listed. It's perfect for Boarduinos, clock kits, Arduinos, and any device with a 5V regulator. Some customers noticed the label might seem to say '.1A' instead of '1A', but there's a comma in front of the 1 that looks like a dot. It's truly a 1A supply.
Using this power supply is easy. First, make sure you have the right plug adapter for your local power outlet since it can work with 100V - 240V AC wall power. Then, connect the power supply to the wall outlet. Next, plug the 5.5mm/2.1mm barrel jack (with a positive tip) into your device, like a Boarduino or Arduino. You'll get a stable 9V and up to 1000mA of current. When it comes to maintenance, keep it in a dry and cool place. Avoid exposing it to water or extreme temperatures. If you notice any strange noises or the output voltage seems off, stop using it immediately and check for any visible damage. Also, don't overload the power supply. It's designed to provide up to 1000mA, so make sure your device doesn't draw more current than that.
