Using SensaSwitch Alarm as Fail Safe Device
Interestingly this buyer had been using some other make water pump automation since many years but was not happy, until he found SensaSwitch water overflow alarm.

On finding SensaSwitch overflow alarm much more reliable and durable, buyer installed sensaswitch overflow alarm as fail safe device to sound alarm if at any time his old automation fails. This buyer review meant a lot to us . As you can see in attached image this was in August 2018, the year we started selling product on amazon. Even after so many years and after many thousand reviews, it makes us feel grateful to buyers who helped build SensaSwitch as a trusted name in this trade.