The house has two sump pumps in opposing corners of the basement and they
work just fine when we get water in the drains. In a third corner, at eye
level, is a 4x4 electrical box with a cover that has "Barnes Pumps" printed
on it. It has a siren and a momentary contact rocker switch with a light on
it. Above the rocker switch it says: Press the switch to silence the alarm
or test the sump alarm.

Coming out the top of the box are four wires (red, white, red, and green;
about 14 gauge) that go through the wall to the outside and into a conduit
that goes into the ground. The side of the box has two 14/2 gauge Romex
cables going in (or out).

If I press the rocker switch, nothing seems to happen. Can anyone tell me
what the siren and switch are for?

Thanks in advance,

Mike Shapp