A Double Pole Double Throw (DPDT) switch is an electrical component that can control two separate circuits simultaneously. It has two input terminals and four output terminals, allowing it to connect one of the two inputs to one of the two outputs. This feature makes it useful for reversing the direction of motors or switching between different power sources. DPDT switches are commonly used in various applications, including toys, model trains, and automotive systems. They can be found in both manual and automated systems, providing flexibility in controlling electrical devices. Their design allows for easy toggling between different operational states.