... LCD display screen, able to display the serving ticket No. and currently awaiting people quantity.2) Installation is easy and simple, all these Manipulator can ... voltage: DC 12-24V, Power<1w, Size: 160mm*100mm*43mm.4) Manipulator have such functions as: Call, Previous, Re-call, ... Display is installed in the awaiting area.Digital tube Main Display1) Multi-lines display2) After idle for one certain time ...