| 摘要 |
<p>A liquid monitoring device which floats in liquid such as swimming pools and the like, is described. It comprises a signal element able to indicate a property of liquid and arranged to float above the surface of said liquid, an elongate housing extending below said signal element and arranged so that it is below the surface of liquid when the device is floating therein, and a sensor arranged at an end region of said housing remote from the signal element and arranged to measure at least one property of said liquid, and means for transmitting information from said sensor to said signal element.</p> |
