TPMS Tire Tyre Pressure Monitoring System Valve set 4 sensors Displayed on DVD. TPMS monitors tire temperature and pressure in real-time. 83% of tire pressure loss is estimated to occur gradually – often without being noticed by the driver. Correct tire pressure helps reduce fuel consumption, and reduces tire wear, the risk of aquaplaning and lack of traction. New technology brings good performance. Low voltage input: 10? Center frequency: 433.92MHz. Pressure detecting range: 0-116 psi, 0-8 bar. Pressure detecting error: ±1.5psi(±0.1bar). Temperature detecting error: ±3? Operation frequency: 433.92MHz. Standby current : 3