... lead time 20 days NameAluminium light box,Scrolling light box, backlit light box, double sided light box,scroller, light box with pole About scrolling ... Optional functionWireless Synchronize DeviceModel: HN-WSD Function:Make the light boxes in same net work changing poster synchronously, more attractive ... will be clip on the diffuser, which can be push and pull down through a guide rail, with this ...