(US, electricity): intermediate switch.

(Britain, electricity) Commonwealth spelling of (US): three-way switch.

(US, electricity) A type of light switch that can be arranged in pairs to control lights from two locations, as at either end of a stairway or long hallway; a double-throw switch. (Britain): two-way switch.

A switch that automatically stops a machine or vehicle after a set period of inactivity from the operator.

(colloquial) A remote control device for muting a television.