CAUTION
For your safety: Connecting a proper ground to the sensor
provides protection against electrical shock in the event of certain
fault conditions. If a proper ground is not available, consult with
a qualified electrician before continuing installation.
3. Prepare the Wires.
Tag the wires currently connected to the existing switch
so that they can be identified later. Disconnect the wires.
Make sure the insulation is stripped off of the wires to
expose their copper cores to the length indicated by the
“Strip Gage,” in Fig. 3. (approx. 1/2 inch).
4. Wire the sensor.
Twist the existing wires together with the wire leads on the CH-250 sensor(s)
as indicated in either step 4a or 4b. Cap wires securely using wire nuts.
4a. Wiring two CH-250s in a 3-way configuration
• Connect the green or non-insulated (copper) GROUND wire from the circuit to
the green terminal on each CH-250.
• Connect the NEUTRAL wire from the circuit and from the lamp (LOAD) to the
white wire on the
master
CH-250.
The term “master” designates the CH-250 that connects to the load.
• Connect the NEUTRAL wire from the circuit in the other wiring box to the
white wire on the
auxiliary
CH-250.
• Connect the power wire from the circuit box (HOT) to the black wire on the
auxiliary CH-250 and to the TRAVELER 1 wire.
• Connect the TRAVELER 1 wire from the black wire of the auxiliary CH-250 to
the black wire of the master CH-250.
• Connect the lamp power (LOAD) to the red wire on the master CH-250.
• Cap the red wire on the auxiliary CH-250.
• Connect the TRAVELER 2 wire coming from the yellow wire of another CH-250
to the yellow wire of the CH-250 that you are wiring.
MASTER CH-250
AUXILIARY CH-250
qO
T
TOP
INDO
OR U
SE O
NLY
L
L
Red -> LOAD
(power to lamp
or fan)
White ->
NEUTRAL
GROUND
TERMINAL
Red -> capped
GROUND
TERMINAL
White ->
NEUTRAL
Yellow-> TRAVELER 2
to AUX CH-250
Yellow-> TRAVELER 2
to MASTER CH-250
HOT (power
from circuit box)
Black-> TRAVELER 1
power to
MASTER CH-250
Black-> TRAVELER 1
power from
AUX CH-250
Fig. 4: Step 4a. Sensor orientation, wire connections and wall box assembly
AUXILIARY CH-250
MASTER CH-250
TOP
INDOOR USE ONLY
TOP
INDOOR USE ONLY
Red
Ground
Yellow
Black
White
Red
Ground
Yellow
Black
White
Load
Traveler 1
Traveler 2
Neutral
Hot
Neutral
Fig. 5 Step 4a. Reference wiring diagram
Strip Gage
1/2"
12.7 mm
Fig. 3: Wire
Stripping
Call 800.879.8585 for Technical Support
