| 摘要 |
This electronic apparatus is particularly suitable as a water-level signalling device for bath tubs. The level of the bath water and hence possible overflowing are indicated in good time by means of an acoustic signal. This is achieved by means of a sensor having an integrated suction cup which can be fitted at the desired level on the bath-tub wall. The sensor, which determines the water level, is connected to the signalling device by means of a two-core cable. The location of the signalling device is variable by means of the cable, and the possibility is thus provided of monitoring the water flowing in in any desired space.
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