| 摘要 |
<p>The apparatus has an optical probe head (3) with a radiation source (17) as well as a sensor (21). The probe head (3) transmits a signal towards a background (9, 14), for example a wash basin or a hand, and receives signals (11) reflected diffusely on this background. The received signals (11) are fed to control electronics (22) in order to control, for example, a valve (5). The apparatus is accommodated, for example, in the water outlets (2) of a washing stand fitting. <IMAGE></p> |
