Domestic sewer alarm
    1.
    发明授权
    Domestic sewer alarm 失效
    生活污水报警器

    公开(公告)号:US4961068A

    公开(公告)日:1990-10-02

    申请号:US295532

    申请日:1989-01-11

    IPC分类号: E03F7/00

    CPC分类号: E03F7/00 E03F2201/40

    摘要: A pair of float operated sensors simultaneously detect inflow into the housing of an alarm assembly to actuate a buzzer and a lamp providing an early warning back-up alarm. One of the sensors remains actuated by the holding action of a magnet to continue operation signifying back-up recession. Under selective control, the buzzer is operated in by-pass relation to the sensors to indicate a low voltage condition of the battery powering the alarm assembly.

    摘要翻译: 一对浮动操作的传感器同时检测到报警组件的壳体中的流入,以致动蜂鸣器和提供预警后备警报的灯。 其中一个传感器由磁铁的保持动作驱动,以继续运行,表明备用的衰退。 在选择性控制下,蜂鸣器与传感器旁通操作,以指示为警报组件供电的电池的低电压状态。