SwitchLinc V2 Relay User’s Guide
Installing SwitchLinc Relay in a Multi-Way Circuit
Understanding Multi-Way Circuits
If more than one switch controls a single set of lights (called a LOAD), the switches are part of a multi-way
circuit. A 3-way circuit uses two switches to control a LOAD, a 4-way circuit uses three switches, and so
forth. Most homes have one or more 3-way circuits, with two switches located in hallways, stairwells, or
two different entrances to a room. Less commonly found are circuits that are 4-way or above.
You can use SwitchLinc Relays to replace switches in multi-way circuits that are already wired in, or you
can use them to
create
virtual
multi-way circuits where there is no existing wiring.
Here is how a wired-in three-way circuit (with two switches) works:
w
es added in the
o learn more abo
-way circuits, go to Google.com or another search engine on the Internet and
Switch 2
Switch 1
LINE
Black*
NEUTRAL
White*
TRAVELER 1
Red* or Blue*
TRAVELER 2
Black*
LOAD
Red*
Main Panel
120 VAC
Non-Dimming
Load or
Appliance
NOTE
Wire colors
marked with a *
are the usual
colors and may
differ in some
homes.
A
ired-in four- or more-way circuit (with three or more switches) has additional switch
middle of the circuit. In the diagram below, the additional switch is shown in one position in the upper box
and in the other position below.
Switch 3+
Switch 2
Switch 1
LINE
Black*
NEUTRAL
White*
LOAD
Red*
Non-Dimming
Load or
Main Panel
120 VAC
Appliance
T
ut multi
enter the search terms “three-way switch” or “four-way switch.”
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