A pull chain, sometimes also called a pull switch, refers to a type of light switch that hangs down from a ceiling fan or light fixture and controls the fan and light. Typically a ball chain or bead chain, pull switches can offer two-position or multi-position options which allow for different speeds. Pull chains also act as a decorative light switch option. A light pull chain offers an advantage in damp environments since it separates the user from the electricity, preventing electric shock. For this reason, light pulls often install in bathrooms.