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Occupancy Sensors 3-Way and 4-Way Switches
How do I wire a motion a sensor to control lights? How to Wire 3-Way and 4-Way Occupancy Sensors to replace existing 3-way switches.By: Dave Rongey
3-Way and 4-Way Occupancy Sensors for Indoor Motion Detector Applications
Electrical Question: How do I wire a motion a sensor to control lights?
I have a three family home unit and in the common stairwell I have a 3-way switch on the first floor, a 4 way switch on the second floor and a 3 way switch on the 3rd floor which are all controlling the common stairway lighting. My question is how do I install a motion sensor so all the lights will go on when my tenants leave their apt at night? Can you please help?
This electrical wiring question came from: Craig, a Homeowner from Bristo, Connecticut.
Thanks for your electrical wiring question Craig.
How to Wire a Occupancy Sensor Light Switch
Application: 3Way Light Switches.
Skill Level: Intermediate to Advanced – Best installed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience and ability to work with tools.
Precaution: Identify the lighting circuit, turn it OFF and Tag it with a Note before working with the wiring.
Notice: Installing additional 3-way switch wiring should be done according to local and national electrical codes with a permit and be inspected.
Materials: Make sure replacement 3-way light switches have the same amperage and voltage rating as the original three way light switch, and is the switch is fully compatible with the electrical circuit, the light fixture and the type of light bulbs being used.
Wiring a 3Way and 4Way Occupancy Sensor
- Hi Craig, you have asked a great question. Consider installing 3 -way occupancy sensor switches that have a wide angle coverage and variable time delays.
- These 3-way occupancy sensor switches may replace the existing 3-way switches.
- Install a 4-way occupancy sensor to replace the existing 4-way switch.
- The sensing pattern should be adjusted as wide as possible and the time delay should be adjusted to provide enough time to travel the full distance of the stairway.
- This modification should be tested to make sure that the occupancy sensor pattern will accurately detect movement on the stairs.
- The sensing may be inhibited due to stairway design or obstacles in the area.
- If the motion detection of movement on the stairway does not activate the occupancy sensors then another solution should be considered.
3-Way and 4-Way Occupancy Sensor Light Switches
I have found for example, that Pass and Seymour has a multi-way Occupancy Sensor switch which you may consider for this application.
Click here for the PDF file: Multi-Way Occupancy Switches
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