Photoluminescent Exit Sign Green - Aluminum Code Approved UL 924 / IBC / NFPA 101 | NightBright USA Part Number ULG-050

The illumination is strong within several minutes following the lights going out. It is also very visible when only some light diminishes (as in this photo). I had to drill holes in the corners and supply screws to install it.

Had to put an exit sign up that glows for a store inspection for a license. Great glo to them.

For our condo, in response to recent Fire Department inspection, we had to put up some signs. OK. Found these on Amazon and ordered 4 after the FD inspector had seen a snip of the web page and said OK - Good to go. Arrived quick and nicely packed. Took out 1 for evaluation and put it up where instructed with temp industrial double-sided tape. Outside. Noted that the glow did not last all night. So called seller and got a call-back Now I know. 90 min glow and no more to be expected. Outside might cause fading of the green background in time. Seller (while driving his truck in Texas) kindly explained to me all about photoluninescent signs. Now I know. Cannot do better for sales support. Ever.

The presence of the NFPA and UL ratings, makes this sign a win for me.The sign glows very brightly in the dark. It was surprisingly bright.The high quality is commensurate with its premium price.Would buy again.

Need to understand that to use this for the replacement of a required EXIT sign, there needs to be a light source 24/7 that keeps the sign charged. There will not work in an area that is dark. Natural light does not last long enough, during the night there is nothing charging the light for an emergency. Possibly a combination of natural light and a night light?

The inspector was very dubious about this concept but he thought they were super cool when he finally saw them. They passed inspection and i saved hundreds of dollars by not having to higher an electrician to hard wire signs in. Apparently in a commercial setting you aren't allowed to do plumbing, electrical, etc; it has to be done by a licensed contractor in that field.

We just needed these signs to get up to code for our daycare. For just a couple signs it was kinda expensive. Like, I understand that some of the 'ingredients' are not normal day-to-day things but it's kind of expensive for some of the target audience. At least it's a one time expense.

Semi-photoluminescent. Not super bright if only exposed to indoor lighting. Either way it's very visible and the arrows are easy to spot from a distance.