| 摘要 |
A switching system for controlling operation of conventional environmental apparatus of the type having an electrical connection adapted to be coupled with a supply of electrical current includes a switching circuit in a first housing for making and breaking a circuit connection between the connection and the current supplied, and a control circuit electrically coupling a magnetic detector with the switching circuit in order to operate the switching circuit to alternatively make and break the circuit connection between the power cord and the current supply responsive to detection of a magnetic element.
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