New High Haze UHD Standard Signage | Proper Display Brightness With a recommend brightness of 500 cd/m2 for an indoor display, the UH5J-H series clearly deliver content and attract public attention, making it the most suitable display for marketing in meeting rooms, airports, retail, shopping malls etc. In various places the UH5J-H series is unable to avoid exposure to environments containing dust, humidity, etc. which may hamper performance over time. The conformal coating on power board reduces these risks by protecting UH5J-H series from salt, dust, iron powder, humidity, etc