A second embodiment comprises a round ceiling mounted unit in which {HEAD ~ heat} generating {TAIL ~ electrical components} are mounted on one radial side of a circular PC board, and the temperature sensor is mounted on the opposite radial side thereof circular PC board, as far away therefrom as possible 
A second embodiment comprises a round ceiling mounted unit in which { HEAD ~ heat } generating { TAIL ~ electrical components } are mounted on one radial side of a circular PC board , and the temperature sensor is mounted on the opposite radial side thereof circular PC board , as far away therefrom as possible
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