| 摘要 |
An alarm system for sounding an audible warning whenever the water level within a sump pump enclosure exceeds the level which normally actuates the sump pump. The alarm system comprises an open electrical circuit including a battery, a battery-powered audible warning device and an elongate probe having closely-spaced contact members adjacent the tip thereof. The tip is suspended in the pump enclosure, above the pump-actuation level, and the warning device is activated whenever the water level rises above the pump-actuation level and immerses the contact members.
|
