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Explain the difference between the various wall mount occupancy sensors?

Issue:
Explain the difference between the various wall mount occupancy sensors?

Product Line:
Lighting Control Occupancy Sensors

Environment:
Commercial or Industrial Building
North America

Cause:
General information for Product Selection

Resolution:
There are multiple versions of the Schneider Electric Wall Switch Occupancy Sensors.  With the many options, it is important to have a good explanation of the different models.

In 2009, 2 families of sensors were released.
First, there is a family which might be called Basic Wall Switch Sensors.  These are Passive Infrared, Single Button and No Ambient Light Detection,  The part number of these sensors all begin with SLSPWS1277 followed by 2 more letters.  The button function varies among these sensors as identified by the 11th letter.  There are 3 colors as identified by the 12th letter.  The functions and colors are listed below.

Basic Wall Switch Function Types:
A = "Auto" Switch,   Button will let you switch from Auto Mode to OFF Mode
M = "Manual" Switch,  Press button to turn on.  Press button again to turn off.  If no occupancy, then turn off.  Time Limit is adjustable
V = "Vacancy"  Switch.   Press button to turn on.  Press button again to turn off.  If no occupancy, then turn off.  Time Limit is fixed at 30 minutes

Basic Wall Switch Colors:
W = White
I = Ivory
L = Light Almond

The second family released in 2009 are Commercial Grade Sensors.  These feature many options above the Basic line.  First, these all have ambient light sensing which will inhibit the lights from turning on based on how much ambient light is in the space.  Also, ultrasonic as well as dual technology sensing options are available.   Finally, these sensors have an option to control 2 circuit with a single device.  

In 2014, the 2009 Commercial Grade Sensors were updated to meet 2011 National Electric Code NEC 404.2C neutral requirements .   All sensors consume a very small amount of power to drive the sensing electronics.  In the 2009 sensors, this power was drained to ground.  In 2014, the sensor was updated to allow the connection of Neutral wire.  The power is drained to Neutral instead of Ground.  However, a ground connected version remains as an option.  

Part number Breakdown of the 2009 and 2014 Commercial Grade Sensors is shown below.



Catalog Pages for the 2009 Basic and Commercial Sensors can be viewed in the Lighting Catalog pages 1 through 8
Other documentation is available through the Sensing and Wiring Devices section of the Schneider Electric North America Website

As of March 1, 2015, all of these sensors will enter obsolescence.  They will be available only until inventory is depleted. 


 
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