| 摘要 |
A self contained apparatus which will detect the presence of moisture at floor level - such as on a basement floor - or below floor level - such as the level of water in a sump. The apparatus is battery powered and foldable, with a pair of moisture sensing electrodes located at the end of a sensor arm that is hingedly connected to a base. A mast is hingedly connected at the other end of the base, and in its erected condition, all of the operating and alarm circuits of the moisture sensing apparatus are located at a distance above the floor. When the sensor arm extends downwardly into a sump, if the moisture rises in the sump well higher than a predetermined level, an alarm will be given.
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