There’s two types of electronics you’re referring to. There’s incidental radiators, like electric motors, switching power supplies, etc that the FCC understands

There’s two types of electronics you’re referring to. There’s incidental radiators, like electric motors, switching power supplies, etc that the FCC understands that RF will be generated from, and they ask that these devices merely minimize their RF. Then there’s Unintentional Radiators which is probably what you’re thinking of, which include computers and other electronics, which are regulated to limit RF.