Wide Field of view Big Screen Solar power charging Car TPMS. Rear-time monitoring the pressure & temperature. Low air pressure/high temperature warning. Set up sensor: learn new sensor ID code when replace sensor. Two units (PSI / Bar) changeable, you can set the one you like. Pressure value: about 0.5-6 bar (7.25-87PSI). Intelligent On and Off. When the car is started, the vibration of the machine is automatically opened and the machine is shut down automatically when it is still, without manual operation. 1+1 charging mode:Solar charging +USB charging. Suitable for many kinds of cars: for Cars, ORV, SUV, MPV, Minibus, Wagon, etc. Please note When you receive the package and turn on the receiver, the receiver displays - or 00, please dont worry. You only need to mount the sensor on the tire, wait for about 1 minute, and you will see the display shows the pressure and temperature of the tire. Receiver Specification: Power supply: Solar power charging. display way: LCD display. Operating frequency: 433.92Mhz ± 50KHz. Operating voltage: 3.7-5 V. Working temperature: -20 °C -75 °C. Sensor Specification: Operating frequency: 433.92Mhz. Working temperature: -40 °C -120 °C. Humidity: 0% to 100%. Battery life: External sensor> 2 years/ 30,000 km. Working pressure: 7.25 – 87Psi. Alarm pressure: >29Psi or <87Psi. Pressure accuracy: ±1.5Psi. Working voltage: 2.1-3.6V. Waterproof: Ip67. External sensor Specification:Working Temperature: -20°C~85°C