Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Works well with sump pump

We've had two major floods in our basement. The first when there was no sump pump and the second when the main sump pump and it's battery operated failed. Now, I check the pumps every spring to ensure they are running. I've put one sensor on top of the sump, and the second one next to the basement bulkhead. It dials our cell phone, which is perfect; it finds us whenever it needs to. I also have a regular hardwired phone, answering machine, fax and distinctive ring all on the same line.I change the batteries annually, at the same time I check the sump pump. I also check it's ability to dial out with a power failure.I've also put un-wired alarms behind the boiler and behind the washing machine. I could wire them in but it's more trouble than it's worth. Had the boiler alarm go off when the expansion tank failed and there was a high pressure release. Again, saved the day.Am I a bit paranoid? Sure; I don't want two feet of water in the finished basement. Ever.