The Chigee external tyre pressure sensors (MFP0019) are easy to install and made from high-quality aluminium alloy. Easy installation and quick one-button pairing make these ultra-easy to use. They measure tyre pressure and temperature and are ultra-durable. The long battery life gives longevity and come as a pair. These are compatible with the AIO-5 Lite, AIO-5 Play, AIO-5 Play for BMW and XR-2.