I purchased this item from Amazon and when it arrived it was missing one of the sensors and had an extra bypass switch. I boxed it up and sent it back for a replacement. When the replacement arrived, it had all of the correct parts, but when I put it together, only one sensor would work. I am not happy with this product and I am sending it back for a full refund. I would not waste your time or money!!
Amazon does a great job of backing customers when they have bad experiences and/or purchase poor products.
I give this product zero stars here. Amazon will only let you give 1 star as the lowest rating.