A device that improves signal strength for wireless networks is a range extender or wireless repeater. These devices capture the existing wireless signal and amplify it to areas where the original signal is weak or non-existent. By extending the reach of the network, they help ensure consistent connectivity and performance throughout larger spaces, such as homes and offices. Proper placement and configuration of the range extender are crucial for maximizing its effectiveness, ensuring that users experience enhanced wireless coverage and reduced dead zones.