subject: IP65 and NEMA 4 – Standards for Outdoor Digital Signage [print this page] There is a similar rating system in the USA too. The National Electrical Manufacturers Association (NEMA) guidelines also dictate the conditions a device can work in and although the two rating systems use different criteria in their assessment of outdoor enclosures, NEMA 4 (or NEMA 4 x for added corrosion resistance) is the standard that outdoor digital signage should adhere too.
IP65 and NEMA 4 Standards for Outdoor Digital Signage
