I bought this TPMS because Dorman has a good reputation in the industry. When I received the sensor it appeared to have been opened earlier as the seal on the box that Dorman had stuck to was cut and taped and there was some grease and dirt on the sensor. But it was clean enough to show it hadn't been driven by a car. When I went to program it for installation, the problem with the sensor was obvious - the non-removable battery was dead. Since it has been more than 30 days since purchase, I cannot return it. So make sure to install your sensors as soon as possible so you have time to return them when they expire.