| 摘要 |
<p>The installation-passive-infrared-sensor device has a passive-infrared-sensor unit arranged in a housing (2) and a surface lens arrangement arranged with a distance to passive-infrared-sensor unit. The surface lens arrangement is formed such that the sensor device in a detecting plane has detecting area (18) with a casing contour that has two parallel casing contour edges (19). The housing has an installation section retractable in a mounting opening and a visibility section (5) providing a contact surface (6) for external engagement to a wall or cover section surrounding the mounting opening.</p> |
