An automatic caller is a device or software that is programmed to make phone calls without the need for human intervention. This technology is commonly used in telemarketing, customer service, and emergency response systems. It allows for a large number of calls to be made quickly and efficiently, often using pre-recorded messages or interactive voice response systems. While automatic callers can be a convenient tool for businesses, they can also be a source of annoyance for individuals who receive unwanted or unsolicited calls.