Queue Management System ( QMS ) for Event company

We received a quotation request for our Queue Management system ( QMS )  from an event company few weeks ago.

Last week, We get order of  Queue Management System ( QMS ) for that event company

Our maximum services for our printer is 4 services, with 4 button. A,B,C ,D button respectively.

It can  change via our keypad on top left. With A, B, C, D respectively.

Services A start with 1001
Services B start with 2001
Services C start with 3001
Services D start with 4001

respectively.