Feature:1. High Performance: High efficiency solar panels, super serial number capability, accurately monitor tire pressure and tire stability throughout the process.2. Monitor Parameter: Equipped full view LCD large screen display, which has loud volume alarm sound warning, with working voltage of DC 5V.3. Stable Signal: Air pressure setting range of 1.0~3.5BA, temperature setting range of 40C~68C, has long receiving distance and stable signal, and support tire position interchange.4. Long Battery Life: Large capacity built in metal lithium battery, ensure unimpeded battery standby life even in cloudy days withour sun.5. Easy Installation: Equipped with accessories such as anti theft nuts, anti slip pads, wrenches, charging cables, etc., ensuring simple installation.Specification:Item Type: Tire Pressure Monitoring SystemMaterial: ABSBattery: 4 CR1632 button batteries 120mAh 3.0V (built in)Display Battery: 1 polymer lithium battery 400mAh 3.7V (built in).Air Pressure Setting Range: 1.0~3.5baTemperature Setting Range: 40C~68CWorking Temperature: -30C~80CStorage Temperature: -30C~85CPower-On Voltage: Dc 5vFrequency: 433.92mhz20.00mhzPackage List:1 x Tire Pressure Monitoring System4 x Sensor4 x Nut2 x Anti Slip Pad1 x Manual1 x USB Cable1 x Spanner