... displayed on the host (LED screen). Waiter can delete the number by remote controller or by ... System features: 1) Kinds of buttons are available:: Can choose many kinds of requesters: HY-2610A, HY-2610B, HY ... (service, bill and cancel). And each button can be defined as needed such as call, drink, ... the service queue number display, staff will know how many requests need to be serviced, and the manager ...