This product is a set of 4 tire pressure sensor TPMS for Toyota, Lexus, and Scion vehicles. It includes the activation type scan tool, manufacturer part numbers, material plastic, superseded part numbers, and interchange part numbers. The sensors have a frequency of 315 MHz, Manufacturer warranty of 1 year, and are designed for easy installation and direct fit. They are suitable for various vehicle models and years, including 2005-2018. The sensor placement on the vehicle is rear, left, front, and right, and they are mounted on the wheel.