An electrical device that repeats a broadcast signal is called a repeater. It picks up a transmission on a particular frequency, enhances it, and then transmits it again. A repeater extends the initial signal's broadcast area by amplification.

Although repeaters have many uses in computing, wireless networks are where they are most frequently used. For instance, using one or more repeaters to send the signal to various parts of a big home's Wi-Fi network may be advantageous. A booster that relays the signal around the obstruction may also be useful for homes with stone floors or masonry walls.

Companies frequently employ a number of repeaters to construct a single wireless network throughout a sizable structure.

Repeaters appear in various shapes and sizes, but they all have the same function. Some wireless devices, commonly referred to as "range extenders," are made especially to be used as repeaters. Using a software tool or online portal that manages the wireless device, other devices, including hubs, switches, and routers, can all be set up as repeaters.

Using a router as a repeater does not take advantage of its signal relaying capabilities because repeaters only rebroadcast a received signal. Thus, if it's feasible, it makes more sense to use a range extension as a repetition.