Features: Accurately monitor tire preure throughout the proce. IP67 waterproof, rust-proof and durable High-precision LCD screen with time display, clearly visible day and night Tire preure unit Psi and Bar can be switched arbitrarily Built-in 300mAh battery Magnetic USB charging port design, you can quickly charge the monitor at any time The display automatically switches on and off, saving power Long receiving distance, stable signal Tire preure monitoring, simultaneous display of both wheels, real-time display of tire preure and temperature 5 kinds of abnormal alarms to protect tires and driving safety High preure alarm Low preure alarm High temperature alarm Air leakage alarm Sensor low battery alarm Product parameters: Model: TM5 Preure Range: 0 - 53 psi / 0 - 3.7 bar Operating frequency: 433.92MHz Accuracy: 1.5 psi Preure unit: psi/bar Temperature unit: Deg.C / Deg.F Working voltage: DC 5V Waterproof level: IP67 Sensor battery: built-in CR1632 button battery Receiver battery: built-in 300mAh polymer lithium battery Sensor battery life: 1.5-2 years Charging method: Magnetic USB charging Packing list: host*1+sensor*2+installation bracket*1+small wrench*1+anti-theft nut*2+magnetic charging cable*1