... number will showing on the RECEIVER with alert music or sound. So the waiters could offer service very timely.Specification ... panel, located at the staff area, including built in audio sound (chime) with optional external speaker. Can be either wall, ... T/T, Western union, Paypal, EscrowWarranty: 1 year FAQApplicationsGuest Pager System can be used in restaurants, hotels, hospitals, tea house, coffee ...