Features: Type: Intelligent Solar TPMS Car Tire Pressure Solar power charging, LCD color displaying, adjustable brightness 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 0-4 bar Suitable for many kinds of cars for Cars, ORV, SUV, MPV, Minibus, Wagon, etc. Intelligent On and OffWhen 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. Specification: Receiver Specification: Solar power charging LCD display Adhere to windscreen for installation Operating frequency: 433.92Mhz 50KHz Operating voltage: 3.7-5 V Working temperature: -20 C -75 C Internal sensor : Working Temperature:- 40C -125 C Working Frequency:433.92MHZ working humidity:Max95% Tire monitoring range value:0bar-8bar Deviation0.013 Battery life:5 years Waterproof: Ip67 Working voltage: 2.1-3.6V Transmit power:R&D environment test below-17db Working pressure: 0 99Psi Alarm pressure: Pressure accuracy: 1.5Psi External sensor : Working Temperature:- -20C -85 C Working Frequency:433.92MHZ working humidity:Max95% Tire monitoring range value:0bar-8bar Deviation0.013 Battery life:2 years Transmit power:R&D environment test below-17db Waterproof: Ip67 Working pressure: 0 99Psi Alarm pressure: Pressure accuracy: 1.5Psi Package Included:: 1 set*Internal sensor/1 set*External sensor Do drop