Smart plugs are among the coolest new gadgets out there, because they add “smarts” to just about any little device that plugs into a standard wall outlet. Want to control your lamp or coffee maker ...

Throw out extension cords that get warm to the touch. "Heat is an indication of overload, damaged internal wires, or improvised connections," says Ko. "Ignoring this advanced warning usually leads to ...

Extension cords are fine for small devices, but certain appliances can be dangerous to use with them, particularly in cold weather.