State two applications of a two-way switch.

1. In a staircase lighting system, a two-way switch can be used to control the lighting from two different locations, such as at the top and bottom of the stairs. This allows the user to turn the lights on or off from either location, providing convenience and safety.

2. In a hallway or corridor, a two-way switch can be used to control the lighting from two different entry points. This allows the user to easily turn the lights on or off as they enter or exit the space, without having to walk to a single switch location.

1. Staircase lighting: A two-way switch can be used to control lights from two different locations, such as the top and bottom of a staircase. This allows for convenient operation of the same light fixture from either end of the staircase.

2. Hallway lighting: In long hallways, a two-way switch can be used to control lights from both ends of the hallway. This eliminates the need to walk the entire length of the hallway to turn the lights on or off, providing greater convenience and accessibility.