Parameter 1.Monitoring system body Operating voltage:2.1-3.5V Storage temperature:-10C-85C working temperature:-10C-85C RF Emission frequency:433.92MH50KHz RF Signal sensitivity:-90dbm Display mode:Black and white Bright screen current:6mA Black screen current:4mA 2. External Battery life:24 months Temperature resolution:2C25C Pressure range:0-5.0Bar Pressure resolution:0.1Bar Waterproof grade:IP67 Transmitted power:10dBm Emission frequency:433.92MHz Features: Anti - theft ; Solar power charging; High and low pressure, leak alarm; Simple user interface; The internal has a longer service life. High accuracy, Using Freescale imported chips; Real-time monitoring Vehicle Sensors Tire Pressure and temperature; Smart start: parking automatically sleep, the car starts automatically wake up. Specification: Solar power charging Adhere to windscreen for installation Operating frequency: 433.92Mhz 50KHz Operating voltage: 2.1-3.5V Working temperature: -10 -85 Adhere to windscreen for installation Packing: 1 set Solar Charging Vehicle Sensors Tyre Pressure Monitoring System