Is The Light Knight guaranteed to work on ALL traffic lights?
We wish we could offer that kind of guarantee but, we can’t. Not all traffic lights work on the buried loop technology and, of the ones that do, some are out of calibration. We believe what you’ll find is, The Light Knight WILL work on about 80 to 90% of the buried sensor traffic lights you encounter. What IS guaranteed is your satisfaction. If The Light Knight doesn’t work for you, just the way we say, mail it back to us and we’ll happily refund your money. We’re so confident you’ll be happy, though, we don’t expect to get many back.