"Lutron Maestro Motion Sensor Switch, 3-Way: Additional
11 Nov 2018
Summary: In 3 way install, shut off power and open 3-way switch
that is going to remain in circuit. Do this first as have to modify wiring at
this switch anyway and opening will tell you traveler wire colors for switch to
be replaced with a Maestro.
When I moved, new house needed motion sensing in closets and on
In all cases, 3 way installs.
Made mistake initially, not seeing that the 3-way switch that I
was going to leave in the circuit, had to be wiring modified and this resulted
in incorrect 3-way circuit operation (Maestro would turn on lights at motion but
3-way switch at other end would not turn on lights as desired).
Reveal 3-Way Switch that is Going to Remain, FIRST:
Cut power and reveal 3 way switch that is going to remain in
With switch out of box, observe which wires are the "travelers"
as they will be attached to same color screws. Write down traveler wire colors.
Most likely, the "traveler" wires will be part of a 3-way cable
or one with a red, a white and a black wire in it.
Go ahead and modify the wiring of the 3-way switch as defined by
the Maestro install instructions.
In one install, I had a very small room with a 3-way
Rather than completely remove the second switch from the circuit,
I left it in.
In this case, because the Maestro sense motion for the entire
room, the second switch does nothing and should have been aborted and Maestro
installed in a non-3-way manner.
Install Maestro Switch:
With which wires are the "travelers" identified already, install
the Maestro switch.
Note: looking at instructions, understand there are 2 black wires
with one located at bottom and one at top. Make sure you make the correct
connection to the black wire at the bottom of the switch.
Normal operation is when the Maestro senses motion, a relay
clicks and the light turn "on".
The light will remain "on" for the duration of switch
programming...so many minutes.
While the light is "on" if the second switch in the circuit is
switched, the Maestro switch relay clicks and the light will turn "off".
If the second switch in the circuit is turned "on" the light will
In other words, a Maestro switch, when wired correctly, operates
the light like any other 3-way circuit.
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