Bullet Points: 1Practical for Use: APP compatible with Android DVD navigation. Voice alert when abnormal tire pressure. Pure copper valve core can withstand greater pressure impact. 2Easy to Use: Plug and play, easy installation. Display pressure or temperature of 4 tires at the same time. You can also choose a package that shows spare tires. 3Adjustable to Use: Adjustable high and low tire pressure alarm value. The tire matching mode makes it easy to rematch new sensors. The tire change mode makes it easy to change any two tires. 4Low / High Pressure: High temperature alarm. Slow and rapid air leak alert during tire puncture. 5Optional Tire Pressure Units: Bar, Psi, Kpa, Kg. MainFeatures: PowerfulTPMS: 1.Tirepressuremonitoringsystem(TPMS)canmonitortirepressure/temperaturestatusinrealtime. Itwilltransmitreal-timevoicealertsandflashsirenstoreminddriversofvehiclecomfortanddrivingsafety. 2.Displaytirepressureandtemperatureatthesametime. 3.Leakagewarning,lowpressurewarning,highpressurewarning. 4.Hightemperaturewarning,lowbatterywarning,nosignalwarning. WideApplication: Thissystemiswidelyapplicabletovehicleswith4tires,withamaximumtirepressureof8.0bar. Suchascommercialvehicles,jeep,off-roadvehicles,minibusesandcars. 4PCSSensors: Weoffer4kindsofsensors,suitableforuseinrainydays.Inaddition,theyhavehighsensitivityandgoodaccuracyinmeasuringpressureandtemperature. Specification: Internalsensor: Workingpressure:0-51psi/0-3.5bar Pressureaccuracy:plusorminus1.5psi Transmissionfrequency:433.92MHz Workingtemperature:minus20-85degreesCelsius Storagetemperature:minus40-plus125degrees Workingvoltage:2.0-3.6V WaterproofratingIP67 Battery:built-inCR2050buttonbattery Batterylife:2-5years ExternalSensor: Workingpressure:0-51psi/0-3.5bar Pressureaccuracy:+/-1.5psi Workingfrequency:433.92MHz Workingvoltage:2.0-3.6V WaterproofratingIP67 Workingtemperature:minus40-85degreesCelsius Storagetemperature:minus40-plus125degrees Battery:built-inCR1632120mAhbuttonbattery Batterylife:1-2years(canreplacebattery) PackingList: 1*TPMSReceiver 4*ExternalSensor 1*Wrench 4*Anti-theftNut 1*Pad 1*UserManual