Description: Dynamically accurate monitor tire pressure on wheels at same time,various tire pressure units available prevent damage from flat tire, prolong tire life span, ensure driving safety. Tire pressure system,installing pressure and temperature sensor on the tire, then displaying the real time data on phone (Android , IOS, IPad) through connection, During travel, tire pressure, battery voltage and temperature displayed in real time and sound large volume alarm warning when statistics' abnormal. TPMS supports both Android and iOS, requires ,long receiving distance, stable signal. Mini and Portable :High precision. Suitable for two Wheel motorcycles Motor Bicycle ect. Specification: Model: M-05 Air pressure setting range: 0-13 bar Temperature setting range: 60C~110 C Working temperature: -20C~80C Storage temperature: -30C~85C Power on voltage: DC 3V Frequency: 433.92MHz20.00MHZ Size Chart: Material: ABS+PC Size: 2.5x2.5cm/0.98x0.98inch Package Includes: 2 Pieces Motorcycle Tire Pressure System External Sensor How to Use: There is a QR code on the product package, you can scan and download.