Product review (4 stars): So far so good...hard to install, but better than an air switch
Switch is great, but what a pain to install/get working properly.  Easier to use than an air switch.  We had problems with the electrical unit and had to send it back for a replacement.  Our granite installer made the hole too big, so we've had a hard time getting it to seat properly.  You must make sure the fiber optic cable is pushed in as far as it can go, or the switch won't work.  Overall, it's a good purchase, just needs some patience during the installation.