... :270*150*50mm 4)With pager quantity : 180pcs Wireless pager restaurant An extemal power amplifier and the serial port communic ation ... .When it supporting multi-button pager ,the mantissa “1” means ordering, “2” means beverage, “6”indicates service , “8”,said bill ,the ... ,C,D,E,F,H,P(80 in English) pager restaurant