| 摘要 |
<p>A passive presence sensor (10) of the spatial type for rooms and the passenger compartments of motor vehicles includes a Fresnel lens (14) for focusing the monitoring radiation onto a respective pyroelectric sensitive element (12). The sensor (10) can be produced in the form of a module which can be fitted in a connection box (1 to 7) or the like of an electrical system and/or installed in motor vehicles as original equipment and is characterised by low energy consumption. <IMAGE></p> |
