Motorcycle Tire Pressure Monitoring System (TPMS) Tire sensor with replaceable battery can be secured to prevent loss or theft Portable monitor has rechargeable battery and monitors tire pressure 0-60 PSI & temperature Monitor tires 24/7: low/high pressure, high temperature, and slow leaks. Monitor warning thresholds are user adjustable; low pressure alert level is per axle adjustable. Monitor has a large 2.4" x 1.6" screen with backlight and big numbers