The WD-200 display receiver is a calling system used for managing requests and orders. By determining the type of an order and pushing the pager button, the information about that order is displayed on the receiver. The wall receiver can display order types and 3 rows of 3-digit numbers, which can be used in restaurants, dining-rooms and cafes to call waiters based on order types. Other applications include summoning nurses in hospitals and summoning employees such as security guards or secretaries. The system can also be used in clinics, nursing homes, offices, factories, hotels and any other place that requires a calling system.