Can anyone explain this...

[Lurch]

On Mon, 13 Dec 2004 23:04:11 +0000 (UTC), "Peter Stockdale" strung together this:

Hmmm, that's the problem with usenet.

Erm, no. 0/10 ;-)

[Dave Plowman (News)]

A special switch added *between* two way ones - it's of a different design. It has four terminals rather than the three of a two way, which is why it's so expensive. ;-)

You may add as many as you want - but the circuit must have a two way one at either end. Diagram below.

Two way switching with optional intermediate.

---------------------------------------------

L1 L1 0===========0 0===========0============= Line | \ / | C 0================================O C \ / \ / 0===========0 0===========0============= Switch return L2 Optional L2 Intermediate