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In the below circuit, I have two switches that can turn the light on or off from those two locations. Any 'switch' will turn the lights into the opposite position:

enter image description here

enter image description here

How could a circuit be made to control light from 3 or 4 locations instead of just two?

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  • 2
    \$\begingroup\$ Multi-way switching \$\endgroup\$ – Eugene Sh. Jan 21 at 21:54
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    \$\begingroup\$ Use a cross switch in the middle. \$\endgroup\$ – Tom Kuschel Jan 21 at 21:54
  • \$\begingroup\$ @EugeneSh. see updated screenshot please. \$\endgroup\$ – David542 Jan 21 at 21:56
  • \$\begingroup\$ @TomKuschel this component? en.wikipedia.org/wiki/Crossbar_switch. Would it be possible to show how this would look in an example? \$\endgroup\$ – David542 Jan 21 at 22:00
  • \$\begingroup\$ @David542 no crossbar :-O I usually call it cross switch possibly a false friend from German language "Kreuzschalter". You made my day! \$\endgroup\$ – Tom Kuschel Jan 21 at 22:02
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Just use any number of DPDT switches in between : )

For example, with three switches like

schematic

simulate this circuit – Schematic created using CircuitLab

and four switches like

schematic

simulate this circuit

And so forth and so forth! Here's an example for five switches:

schematic

simulate this circuit

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