I own one of those units and I have to wholeheartedly endorse it. Not only is it a quality product, the customer service is OUTSTANDING.
I obtainted my float switch secondhand. It hadn't ever been used, but was previously owned. About 2 months after I put it into service, it burned out. Nothing catastrophic, it just ceased operating. Once I figured out who made it (had to do some searching), I took some pics of the internals and sent emails asking if I was correct in my assumption on the part that needed to be replaced. The reply email came quickly and affirmed my assumption. I also received an offer to repair and upgrade my unit if I paid for shipping. The offer was in spite of the fact that I told Aquadevices that I had bought the unit used.
The turnaround was great and the new design has been in continous service for the last 20 months with no problems.
Regards,
Scott