Many light switches in your home will come in four varieties: Single-Pole Switch. Single-shaft switches are the most widely recognized. These switches utilize a basic on-off flip to turn lights, gadgets and containers on and off from a solitary area. Flipping the switch on single-shaft models interfaces or separates the circuit. Most single-shaft switches are set apart with on and off settings. It’s critical to wire your switch in the right bearing to guarantee the markings coordinate the situation of the switch. A solitary shaft switch will have two metal screws on either side of the switch. These metal terminals house the approaching and active hot wire. A few switches likewise accompany a green ground terminal. Twofold Pole Switch. Twofold shaft switches additionally use an on-off flip and can just control lights, gadgets or repositories from one area. Be that as it may, with four metal terminals, twofold post switches can house two hot wires, which implies that twofold shaft models can change to a 240-volt circuit. Twofold post models additionally use a green ground screw. Three-Way Switch. Three-way switches come in sets and enable you to divert lights on or off from two areas. This makes them perfect for controlling long foyers. Three-way plans are more confounded than single-and twofold post switches; the hot wire in three-manner structures is associated with the normal screw (COM). The rest of the terminals are utilized to wire the leads for switches. Three-way switches additionally accompany a green ground screw. Four-Way Switch. Four-way plans are joined with three-route changes to control lights from at least three areas. You can distinguish a four-route switch by its four terminals.