| 摘要 |
<p>The device (10) has a receiving area in which an electric conductor (102) is partially received if the device is attached at the conductor. A display unit (20) visually displays existence of an electrical direct current (DC) in the conductor. Two displays (24) are displayed by utilizing the display unit, where the device is designed such that the device causes force required for switchover between the displays by a magnetic field of the DC flown by the conductor. The display unit comprises a rotating element (40) that is rotatably mounted around a rotational axis.</p> |
