... the coaster pager SU-211 and the charger SU-211A2. Where to use it?Restaurant, tea house, coffee shop, KTV, ... Bar, Club, Hospital, and any place need to wait for something in line3. What advantage of this sytem ... service in order and run fastSave Manpower4. How to use it?When customer wait in line, you ... table ready or meal donethe waiter just need to press the number in the transmitter SU-200 then ...