... trivision billboard outdoor advertising billboard, display equipment, signboard T type single column trivision, tri-vision, trivision display billboard,outdoor ... time: freely set from 0-900 seconds. Power supply: voltage 220v, current 0.54A, frequency 50HZ, power 90W. Wind ... customers requirement) A. synchronous B. Wave type C. Curtain opening type D. Curtain closing type E. Flipping step by step. F. ...