Negative Positive
Title: Great switch, but check the sensor wire
Review: This switch worked great for about a year, and then it failed. Fortunately, I have a backup monitor (Rialco Flood Alarm) that alerted us to the problem. It turned out that the sensor wire was not making contact to the water, even when submerged. I checked the sensor wire, and found that it had hardly any conductor exposed. So I cut off three feet of the wire, stripped off an inch of insulation, and coated it with solder to help make sure that it makes contact with the water, and now all is working again.Note that the AU5ES has its own alarm that is supposed to sound if the water does not go down in a specified period of time, but since the sensor wire was not working, that alarm did not work either. So always have a backup alarm that has its own sensor wires, and hope that they don't both fail at the same time. You can never be too careful with sump pumps, but this is a good product overall.
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