Features:Brand new and high qualityReal time monitoring tire preure and temperatureTire leaking warning and temperature balanceLCD display screen, Simple user interfaceThe display can be directly plugged into the cigarette lighterBeeping alarm and display the alarm valueCan support four tires, tire position can swapVisual and audible warning for abnormal preure and temperatureSensor Specification:Please install in by Profeional car centerMore stable and accurateOperating frequency: 433.92Mhz0.1MHZWorking Temperature: -30~85Operating Voltage: 3.7-4.2VWorking current: static1uA, working current15mAExternal Sensor (Optional):Easy to install, convenient to replaceDust-Proof / Water-Proof / Anti-theftOperating Voltage: 2.6-3.3VWorking current: static50uA, working current15mAWorking Temperature: -30~85Accuracy: temperature: 1, preure: 0.1bar Package Included:1 x Tyre Preure Monitoring System4 x External sensors1 set x Acceories (tool)