Consists of a wall mountable Display screen to display calling numbers & bells, each can be programmed with a unique number so that once you press the button the notification appears on the display along with a beep or melody (Customizable). It can also display the last three called numbers at the same time. Office boy pager can allow the office boy to receive the calling numbers from 300~500m away from the location, In- addition it keeps the last 20 called numbers in the memory.