Polymorph No, it will not. I regret buying this one. It is worth the extra to get the V2 version, it measures voltage and internal resistance aka ESR.

Polymorph The power supply is built-in and will accept 100 to 240Vac. It comes with the AC cord, you just need to select the proper plug for your country. AU Plug, EU Plug, UK Plug, or US Plug.

Polymorph Mine quit working after a short time, so I don't know.

Polymorph Mine barely worked, then after about 24 uses, it died.

Polymorph I can't get any of mine to work correctly, either. I have to get it to fire off at least 3 times before any soap foam comes out. Even then, it is barely any soap, not enough to wash my hands with. That's when it triggers at all.

Polymorph The one I received, and the one in the photos of the device are the AD584KH model.

Polymorph The soldering on the wiring to the switch and banana jack terminals on the one I received was really poor. I replaced those wires.

Polymorph From the Arduino software, go to Tools and click on Manage Libraries. Enter SSD1306 and it will show you several drivers. I chose Adafruit SSD1306. It also installs examples, so you can go to Files, Examples, and scroll down to Examples from installed libraries. You'll see a folder, Adafruit SSD1306, in which will be several examples for both 128x32 and 128x64 in SPI and I2C. This is the I2C version, so open the 128x64 I2C example. I love this example file, it really shows off the display, and gives you a lot of ways to drive the display.