This product sensor is connection Car tires external or Built-inNeed to determine the installation size of the car panel, thank you!Features:- 4 external sensors, built-in CR1632 3.7V cell, monitor frequency: 433.92MHz.- Real-time monitoring per 3s, can monitor preure and temperature at any time.- Reduce driving risks and fuel consumption, prolong lifetime of tires.- Electronic preure detection, high accuracy.- Abnormal status alert, flash and icon alert, alarm can be set.- Lightweight design of emitter, wide angle screen design, portable and convenient.- Support English / Chinese language.- Monitoring battery voltage of vehicle.- 2 options of preure unit: PSI / Bar.- Suitable for Toyota.- Displayer size: 34 x 23.5mm.Package included:Display host*1Sensor *4