Manually operated danger or fire alarm has an additional cover plate between its upper and lower housing parts that is provided to protect the alarm mechanism and circuit board when the upper cover is opened

摘要

Manually operated danger or fire alarm has a wall- mounted housing lower part (1) and housing upper part (2) with at least a window-type opening (2.1) into which a plate (2.5) can be pressed. The lower part has a mounting plane for an electrical circuit board (1.6). The circuit board exchanges condition messages with a central control unit. A cover plate (4) that can be connected to the lower housing part is mounted between the upper and lower parts.