Personally, I wouldn't trust it anymore than a $50 auto-topoff setup with the same kind of float
I'm surprised Tunze has offered this as their sensor eye setup is failsafe to near perfection, so why would they want to sully their name when this kind of unit causes negative feedback after they fail
For the record, I use 2 of their Osmolators and have found the float backup to be of great use
I have it setup to stop the pump in case of mutliple power outages/restarts as it will cut the pump power and not over fill
But I would never go without the sensor eye
