... service quality 2.Lower manpower and management cost, 3.Signal Coverage 500m 4.OEM logo availalbe ------Table buzzer system ... timely. -------There are many kinds of table button and signal receiver for your choice. -------Each Main unit can support ... -------MOQ: 1 Complete set, which consist of table button, signal repeater, signal receiver.-------Payment: T/T paypal western union -------It has following ...