Note: the tire preure sensor can be only used with our tire preure gauge. Features: brand new and high quality Air preure setting range: 0.1~6.0BATemperature setting range: 60~110Working temperature: -20~80Storage temperature: -30~85Power-on voltage: DC 5VFrequency: 433.92MHz20.00MHZ. Exceive or low tire preure during driving, for any reason (such as foreign body piercing the tire, tire scratch...) If the tire leaks, the system will automatically alarm immediately, so as to ensure safe driving. Multiple tire preure units are available, long receiving distance, stable signal, support tire position interchange. Portable installation, long-lasting battery life, beautiful appearance. Real-time monitoring keeps you and your car away from risks. Tire preure monitoring systems are used to increase the length of driving, reduce extra oil reduction from insufficient tire preure and extend the working life of tires.Built-in vibration sensor, the car automatically turns on when starting, and automatically turns off when the car stops. Function: prevent tire burst, real-time monitoring, reduce wear, save fuel, solar energy, leak alarm. This product uses solar energy to charge,you can also use car USB or mobile phone charging cable. Wirele connect by external sensors, easy install. Specification: Material:ABS/Plastic Size:As Picture Shown Type:RF,LF,LR,RR Color:Black Net Weight:10g/185g Package Includes: 1x Tire Preure Sensor or 1x Tire Preure Gauge 4x Sensor note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.