Joe and Ken, I must appologize for providing inaccurate information regarding the availability of a back-up system for a sewage ejector pump. If I had more carefully read the information on Zoeller’s website, I would have understood that the Basement Sentry was specifically for “clear water” applications, not for sewage ejector pumps. Sorry!
Ken, perhaps Joe’s inquiry indicates a need for an economical battery back-up system for a sewage ejector pump.