You’ve probably never thought about electromagnetic interference (EMI), but that doesn’t mean it can’t affect you through your electronic devices. EMI manifests itself as interference in function or communication, causing a device to lose a signal, perform poorly, lose data, or fail entirely. EMI can affect numerous devices in your home, including televisions, cell phones, radios, computers, routers, and other devices, leading to minor inconveniences to major damage.

While most electronic devices possess some degree of EMI shielding, it still pays to assess any potential sources of EMI in your house and eliminate or avoid them. Here are some common sources of electromagnetic interference (EMI) in your home to watch for.