LED Countdown Display. Small volume, light weight, and easy to install. ... supply voltage: AC 220V±10%, or 110V±10%2) Environment temperature: -15 ~ +50°C3) Luminosity: a) Red: 5, ... 6) Dimensions: 860 x 670 x 80mm7) Weight of the display: 23kg8) Requirement of lamp order: green - yellow - red, ... is not permitted, to avoid the abnormal working2) The display is a kind of precision electronic product, so it ...