Review on 🚫 VACANT Conference Headline Sign Slider by Randy Bin

This is a nice and large device that can be read from afar. The slider doesn't have a handle, instead two notches in the middle provide grip. One issue is that there's no locking mechanism on the back, so the back cover can easily come loose, or rather, when mounted on a wall, the front panel (and lettering) can easily come loose with rough handling. I've marked the BLANK and IN USED pages with green and red markers respectively to make them easier to see.