How does an intermediate switch work and explain it with an example

raghu, January 2009

by control the two of other switch

zack, March 2011

Go here...

http://www.danlers.co.uk/dimmers/wddimmers.html

First diagram under Intermediate circuit shows a light controlled by three switches. The Intermediate switch is a crossover switch... in the middle.

Wikipedia says... "DPDT switch internally wired for polarity-reversal applications"

Examples of switches here...
http://en.wikipedia.org/wiki/Switch

Can be made from a DPDT switch quite easily with external loop wires - a DPDT switch has 6 terminals but an intermediate switch, with internal wiring has the looping built in and only presents four connection points.

Peccavi, January 2009