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A switch symbol marked for control from two points.
Also known as: Three-way switch symbol, Multi-point switch symbol
On an electrical installation plan a two-way switch is marked so that one light can be operated from either of two positions, as at the top and bottom of a stair.
Denotes a switch arranged so a light can be operated from either of two positions.
Contexts: Technical drawing
Appears in pairs, and a single two-way switch on a drawing means its partner has been omitted in error.
Contexts: Technical drawing
A switch circle with an additional stroke or a numeral marking it as one of a pair controlling the same point.