Our perimeter LED screen’s brightness is up to 5500nits even higher.The Product Passed All CertificationsOur products have been certified by CE (including EMC & LVD), RoHS, ETL, FCC, CB, IECE, KC, PSE, etc. And in order to avoid black-out screen during the events, we can provide signal back solution. When one of the signal cables breaks down, the screen is still able to display the live-feed or advertising content. Meanwhile, backup power supply is also feasible. When the power supply gets failed, the screen won’t appear black.