Jill
Three stars because…
I'm giving them three stars because when I first started using them over a year ago the customer service was fantastic. When I had a bad sensor, they replaced it without too much hassle. I recently had a sensor, that after 2 days stopped working, and customer support would not replace it. I'm very experienced at using these and some are lemons, but knowing that I would receive a replacement for those occasional bad sensors was reassuring. Now, I can't justify spending money on something that has no guarantee to work.


