RemixIconEx.Device.qr_code

You're seeing just the function qr_code, go back to RemixIconEx.Device module for more information.
Link to this function

qr_code(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Device.qr_code()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M16 17v-1h-3v-3h3v2h2v2h-1v2h-2v2h-2v-3h2v-1h1zm5 4h-4v-2h2v-2h2v4zM3 3h8v8H3V3zm2 2v4h4V5H5zm8-2h8v8h-8V3zm2 2v4h4V5h-4zM3 13h8v8H3v-8zm2 2v4h4v-4H5zm13-2h3v2h-3v-2zM6 6h2v2H6V6zm0 10h2v2H6v-2zM16 6h2v2h-2V6z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}