SHENZHEN JUTAI Loop Detector VS the red one, you will know the difference between them, and you will trust our quality. Our mission is doing good quality vehicle loop detector to reduce troubles of our customers, cause if the loop detector has problems, it will hit vehicle, customers need to pay for it; they also need ask engineer to solve problems, they also need to pay engineer, we will try to do good quality products to reduces those bad things happen.More details please visit www.jtrfid.com or add my skype :mayxiao9