Solar Powered TPMS System with LCD Screen Loud Alarm for RV Vans Light Trucks Features： 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 40°C~68°C, 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 System Material: ABS Battery: 4 CR1632 button batteries 120mAh 3.0V (built in) Display Battery: 1 polymer lithium battery 400mAh 3.7V (built in) Air Pressure Setting Range: 1.0~3.5ba Temperature Setting Range: 40°C~68°C Working Temperature: -30°C~80°C Storage Temperature: -30°C~85°C Power-On Voltage: Dc 5v Frequency: 433.92mhz±20.00mhz Package List： 1 x Tire Pressure Monitoring System 4 x Sensor 4 x Nut 2 x Anti Slip Pad 1 x Manual 1 x USB Cable 1 x Spanner