Santek EZ Door Sign Office Meeting Conference Room Sign 2.9" E-Paper Electronic Paper Display In Use Out Of Office Available Quiet Please Multiple Messages No plug-in USB-C charging (White)

I returned this one because I needed the one that I could modify. But this worked just fine, and if you are ok with preset messages this will fit the bill.

too small, it is the size of a uniform name plate not for doors

Nice e-ink display for the price. It however needs some more improvements. It takes about 10-15 seconds to get it switched to the right message. If you’re running to a meeting, you better set before so you don’t have real with it. The screen is nice and clear. Red and black colors are very good. I would also suggest better mounting in case it needs to be taken off for charging. Overall, I recommend it.