Signal repeaters are devices that receive a weak signal and amplify it, allowing for better transmission over longer distances. They are commonly used in telecommunications to enhance the quality of phone calls and internet connections, especially in areas with poor coverage. By boosting the signal, repeaters help maintain a stable connection for users. These devices work by capturing the original signal, processing it, and then retransmitting it at a higher power. Signal repeaters are often used in conjunction with cell towers and Wi-Fi routers to improve connectivity in homes, offices, and remote locations where signals may struggle to reach.