fourswitch

Fourswitch is a term that can refer to several concepts in electrical engineering and information technology. It is not a single standardized device, and the meaning depends on context.

In electrical installations, a four-way switch (often called a four-way or intermediate switch) is used to control a light from three or more locations. It is placed between two end switches (three-way switches) in a circuit. The device has four terminals and swaps either of two traveler conductors when toggled, changing which end of the circuit is connected. The arrangement allows people to illuminate or extinguish a light from multiple stair landings, corridors, or rooms. Wiring variants exist, so installation should follow local electrical codes and the switch's documentation.

In computing and networking, "fourswitch" is sometimes used informal ly to describe a four-port network switch or a software-based virtual switch that connects four network segments or virtual machines. However, this term is not standardized, and official product documentation typically uses more precise terms such as four-port switch or virtual switch.

The phrase can appear as a brand name or descriptor in hardware kits, educational electronics, or puzzles that involve switching mechanisms. In such cases, the exact function depends on the product design.

See also: four-way switch, intermediate switch, network switch, virtual switch.