Bought this two weeks ago.  It worked wonderfully for two days.  Fairly easy to set up. Unfortnately, it developed a mind of its own.  It sporadically turns and off at will (10-20 times a minute), and the top of the faucet becomes unresponsive. About every 3rd or 4th touch actually registers and then only turns on or off for a second before it starts clicking and cycling again.  Have tries different plugs, using extension cord, etc to no avail.  If it is unplugged and turned off - faucet goes back to working flawlessly using touch.