Car Tire Pressure Monitoring System with 4 External Sensor Car Solar Power TPMS System. SPY Solar Power Car Wireless Tyre Pressure Monitoring System. Wireless 2-way rechargeable display (place on dashboard freely). Display can be charged by solar energy or Mini USB charging slot. Intelligent design for power saving of display. Self-testing for each power on. The lightest valve-cap external sensor with IP treatment (no balance needed after installation). Large display battery capacity for a month use. Good for family cars sharing. Convertible pressure unit (Bar / Psi). Display with visual and audible warning for tire pressure. Two ways for sensor programming. Low power warning visble on the display. Internal horn volume: 6580 db 2. Working voltage : 12±3V 3. TPMS sensor working temperature :-20°C80°C 4. Display temperature :-20°C70°C 5. Pressure range : 0349KPa /0-3.5Bar /0-50.7PSI 9. Hexlight Canada is a Canadian-based export company delivering a diverse range of high-quality products worldwide. Through strategic partnerships with trusted factories in Canada and China, and a network of dedicated sourcing agents, we continuously identify innovative, high-quality products at competitive prices. Our commitment is simple: quality, transparency, and efficiency – delivering exceptional value and a seamless experience to every customer. We carefully handle each order to ensure your package arrives quickly and safely. Please note that factors such as weather, postal traffic, or carrier performance may occasionally cause delays beyond our control. Your satisfaction is important to us.