| 摘要 |
<p>The present invention refers to a device for detecting and signalling malfunctions in use of electrical appliances comprising a cyclical or continuous central measuring and processing unit (15) connected to two input/output ports (19, 19') for connecting between a source of electrical power (20, 20') and an electrical appliance (30, 30') respectively, the central unit (15) being connected to at least one signalling means (11, 12, 12', 13) controlled by a malfunction occurrence signal processed by the central unit (15).</p> |
