“Easy install, working amazingly well, and is extremely quiet - compared to my older metal unit. Easy instructions and the backup is invaluable - comes with a charger and everything - just no battery - which was no problem to find around the house.”
“the latest 507-005 is called the KEY..older model is the Sentry..both have the same #507-005..the difference is mainly in the charger/controller..Sentry is 10 amp, and it doesn't have a test function...Key model controller/charger is 1.6 amp and does have a test function button that activates the pump briefly..the low amp charger increases battery life but on a fully discharged battery may take 2-3 days to fully charge..the 10 amp charger model may take only 1 full day to fully charge..warranty on Sentry is only 1 year vs 3 yrs on the Key...gpm on the sentry is 23 at 5', and 15 at 10' with fully charged battery..if your vertical run is long or you get a lot of water, you might consider the 508 model which pumps almost twice the amount of water per minute but at the expense of slightly shorter run times..my Sentry model lasted 11 years and I just replaced it with the Key model..pump is identical on both..I recommend both as long as you know the limitations..take time to download and read the assembly instructions..build quality is typical Zoeller which is very good..”
