| http://www.w3.org/ns/prov#value | - subject sensors are placed on the ceilings of the respective rooms and corridors or halls adjacent to these rooms. [0011] However, when trying to use moving subject detecting apparatuses in the conventional examples 1 and 2 mentioned above at home, the apparatuses must be placed respectively for a plurality of rooms, and the high cost for placing these apparatuses is a problem.
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