Owner's Manual

You will need to determine which is the
“LINE” wire and wall box and which is the
“LOAD” wire and wall box.
Your old switch may have a screw
terminal of a different color (usually black).
This will either be the “LINE” connection
or the “LOAD” connection. Tag this wire
with a piece of electrical tape.
Disconnect all wires from the old switch
and ensure no wires are touching. Turn
the power back on at the circuit breaker.
Use a handheld voltage tester to
determine if the tagged wire is “live”.
If the tagged wire is “live”, this is the
“LINE” wire and wall box. If not, this
is the “LOAD” wire (and wall box in
3-way applications).