Automatic temperature compensation 4,000,000 ID coding Automatic data backup (black box function) Detecting the temperature and pressure of four tires in real-time High pressure/low pressure warning High temperature warning Fast air leaking warning Wireless transmite and receiving Life of battery for monitor up to 7 years 1) Sensor Module Parameter: Operating Battery: Set-in Special Lithium Battery Operating Temperature Range: -40- +125C Operating Humidity: 100% Temperature Measuring Range: 0?50 Kpa Pressure Aviation: +/-8.5 Kpa Pressure Accuracy: 1.37 Kpa Temperature Measuring Range: -40- +125C Temperature Measuring Aviation: +/-4 C Temperature Measuring Accuracy: 1C Weight: 30 g Size(L*W*H): 68*31*20mm Battery Life (Projected): over 5 years (normal vehicle use) Receiving Frequency: 433.92 MHz Note: Battery life differs with the actual use of owners 2) Receiver Module Parameter : Power Supply: 12V DC Operating Current: <50 mA Operating Temperature Range: -20?85C Operating Humidity: 95% Weight: 51 g Size(L*W*H): 108*73*25mm Receiving Frequency: 433.92 MHz 3) Display: Screen: High definition color LCD Weight: 33 g Size(L* W* H): 85*45*16mm