1. Can be arbitrarily set the contents of the Red Cross and a variety of dynamic patterns of the perfect combination of green frame,isverysuitable logo in the line hospitals, pharmacies and other healthcare. 2. Ultra-high brightness outdoor double-sided LED, pretty appearance, light weight, thin volume, install and transport easily. 3. Adopt constant current drive circuit, dynamic cache technology, with offline functionality. 4. Can be arbitrarily set display text, graphics, temperature, time and other information, variety of design changes in show of combination. 5. Adopt military wireless transmission technology, anti-jamming strong, stable work. 6. Round-clock work, anti-acid-base, windbreak, rainproof, moisture-proof, antifreeze, thunder-proof.