Which technology allows devices to communicate over existing home electric wiring?

Powerline networking is a technology that enables devices to communicate by utilizing the existing electrical wiring in homes. This method works by sending data signals over the power lines, effectively transforming any electrical outlet into a potential network connection point. This is particularly useful in environments where running additional networking cables may be impractical or where Wi-Fi signals are weak.

Powerline networking devices typically consist of an adapter that plugs into a standard electrical outlet and connects to a network device (such as a router or computer) via Ethernet cable. Another adapter can then be plugged into a different outlet in the house, allowing devices to connect to the network through the existing electrical infrastructure. This technology can provide a stable connection and can sometimes achieve better speeds than Wi-Fi, particularly in densely constructed environments where Wi-Fi signals might struggle to penetrate.

In contrast, Wi-Fi relies on radio waves for its connectivity, Ethernet requires dedicated cabling (like Cat5 or Cat6) to physically connect devices, and Bluetooth is designed for short-range, low-power devices typically used for personal connections rather than robust home networking. Therefore, Powerline networking stands out as the solution that utilizes home electrical wiring for device communication.