Motor Vehicle Sensors There is a film on the receiver of this product, please tear off the film before use! Jansite Cigarette Lighter Digital TPMS Car Tire Pressure-Real time monitoring tire pressure and temperature -Tire leaking warning and temperature balance -The display can be directly plugged into cigarette lighter -Beeping alarm and display the alarm value -Can support four tires, tire position can swap -Visual and audible warning for abnormal pressure and temperature -Two units (PSI / Bar) changeable, you can set the one you like. -External sensors can change the battery, Internal sensors cant change the battery. Real-time Monitoring and Warning of Battery Voltage Display the voltage of the battery in the car to help you know if there is any abnormality in the car battery, to expand and protect the battery life of the battery. Suitable for many kinds of cars Suitable for Cars, ORV, SUV, MPV, Minibus, Wagon, etc