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Why is the 65C option not available on JHBL when an embedded sensor is used?

The 71 degree ambient rating for the sensor refers to the local air temperature within ½ inch of the sensor’s plastic housing.  If the sensor was sitting on a table in a room that was at 65C then UL would give us the green light because the sensor is rated to 71C and the local air near it is less than that (at 65C).  However, this is not the case once installed in a fixture.  This sensor’s body is recessed mounted into the JHBL  and the inside of the fixture is typically around 15C hotter due to the heat from the LEDs and Drivers.  Therefore, the local air around the sensor is about 80C when the ambient around the fixture is 65C.

 

 

 

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