| 摘要 |
A window fan assembly comprising a housing with openings therein for an air stream through the housing; at least one fan is mounted in the housing for generating the air stream through the openings of the housing; and a sensor connected to the housing, the sensor being disposed on the housing for detecting moisture particles associated with the air stream, upon the detection of a moisture particle of a predetermined size, the sensor causes an interruption of the air stream by stopping the fan operation.
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