Indoor Bi-color LED Display Screen is viewing computer as control center, equipped with comprehensive programming software and broadcasting software. LED screen and electronic display window form picture correspondingly and display real-time synchronization, and can change the picture size easily and receive video signals from DVDs, VCDs, television sets. Its performance is extremely rich. The screen is well open, with no restriction on the operating systems or limitation on software, can reflect the computer monitors real-time. It adjusts color contrast and brightness automatically; with high refresh rate, it stabilizes the pictures. The cabinet of screen is modules designed, which enable installation simply and maintenance conveniently. Broadcast software is powerfully functional and operated simply. Using super circuit protection, it is anti-hypertension and anti-electrostatic. This product is widely used in the exhibition centers, the supermarkets, the advertising companies, stadiums, airports, docks, stations, streets and express ways for messages and advertising