Fangrui Product Details Easy Installation, Quick Alarm: The Taimster Tire Pressure Monitoring System Ms1 Offers Five Alarm Modes: Including Quick Air Leak Alarm, High/low Pressure Alarm, High Temperature Alarm, And Sensor Battery Low Battery Power Alarm). The Sensors Are Equipped With Programming With The Monitor After Production, You Only Need To Set The Safe Pressure Value And Safe Temperature Value You Need. Alarm Safety Ranges Are -psi To +psi For Reference Pressure And -f To +f For Reference Temperature. The Alarm Will Be Triggered When The Monitored Data Is Out Of The Safe Range. [solar And Usb Charging] The Tire Pressure Monitoring System Supports Both Solar Charging And Usb Charging. By Using Higher Quality And More Durable Solar Lithium Battery Panels, The Monitor Has Excellent Automatic Charging And Storage Capabilities, Which Can Extend The Service Life Of The Monitor, Ensuring That Drivers Do Not Need To Worry About The Continuity Of The Products Operation. Supports Usb Charging And Is Thoughtfully Eq