Public domain photos

The image shows a small metal object in a box with a QR code on it, sitting on a gray surface. At the bottom of the image, there is a scale and a piece of paper with text on it. The object appears to be a light-emitting diode.

The image shows a small metal object in a box with a QR code on it, sitting on a gray surface. At the bottom of the image, there is a scale and a piece of paper with text on it. The object appears to be a light-emitting diode.Open in library