We are in the hurricane Ian recovery areas. We installed card readers w/keypads for one of our marina customers using a "ruggedized" reader made by PDK. Since sea spray and the elements are harsher right on dock pier gate applications exposed to the gulf, we used a reader with a sealed membrane/touch sensitive keypad versus ones with individual keys like the OEM Wavelynx reader or even HID readers. From what I could find, HID Signo readers have a very good IP rating of IP65. The Wavelynx readers do not detail their IP Rating, but the datasheets from some of their OEM partners show either an IP55 or IP56 rating.
Long story short, the storm surge was too much and the readers became completely submerged in water. The customer asked me, half-seriously, are these readers waterproof? My first answer was, no, not for salt water, which is true, but I looked up the what each IP rating actually means, and both IP67 and IP68 can be submerged in fresh water for up to 30 minutes, the IP68 is rated for about 3' deeper han IP67. Again, this is not for salt water, but it got me to thinking about what we'll find when the power is restored and the panels are powered up again, and we reconnect the readers that have "dried out". I know they were submerged for more than 30 mintes and it was salt water, so they are toast. Incidentally, the Farpointe Conekt readers carry an IP67 rating, which is impressive for a mobile-ready reader with a keypad. These are the only two keypad readers I have found that are either IP68 or IP67.