| 摘要 |
A control circuit is disclosed for controlling an air conditioning and/or heating system in a region comprising a first circuit for establishing electrical signals corresponding to an upper and lower temperature of a first temperature range. A second circuit is provided for establishing electrical signals corresponding to an upper and lower temperature of a second temperature range. A presence sensor is provided for detecting the presence of a person inhabitating the region. A logic circuit is connected to the aforementioned circuit for controlling the system in accordance with a first temperature range when a person is inhabiting the region and for controlling the system in accordance with the second temperature range when the region is void of inhabitation by a person.
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