| 摘要 |
An intrusion detector consisting of a housing (1), a movement sensor and an evaluation circuit, whose housing lid (2) contains a locking device (4) with an opening (5). When the locking device (4) is operated, the housing lid (2) is firmly connected to or released from the housing base (3). The opening (5) is moved in such a manner, when the locking device (4) is closed, that it comes to rest over a light source (6) which is located under the housing lid (2). The light of the light source (6) enters through the opening (5) and indicates that the housing lid (2) is correctly locked to the base (3). An expanded design serves for anti-sabotage purposes in that it contains a switching element (10) which emits a disturbance signal as soon as the firm connection of the housing lid (2) with the base (3) has been released. <IMAGE> |
