Monitor the air pressure and temperature of up to 22 tires at once with the iN•Command® Tire Pressure Monitoring System. The waterproof sensors use Bluetooth technology to communicate important safety information right to your smart device with the iN•Command TPMS app. Just open the app to assign a sensor to each tire by scanning the QR code with your device's camera to receive audible alerts. TPMS can be used independently of iN•Command® Control Systems.