ITM's Uni-Sensor is the ultimate Tire Pressure Monitoring Sensor (TPMS) and one of the first programmable solutions designed to be Ultimate O.E sensor replacement for United States and Canadan market. Battery Life: 5+ years. Storage Temperature:-40C to +125C. Operating Temperature: -40C to +125C. Operating Humidity: 90%. Operating Frequency: 315 MHZ or 433.92MHZ. Pressure Monitoring Range: 0 to 60 psi (450kpa). Pressure Reading Accuracy: ±1psi (±7kpa) at normal pressure range, 0 to 50 units.