Parameter: 1.Monitoring system bodyOperating voltage:2.1-3.5VStorage temperature:-10C-85Cworking temperature:-10C-85CRF Emission frequency:433.92MH50KHzRF Signal sensitivity:-90dbmDisplay mode:Black and whiteBright screen current:6mABlack screen current:4mA 2. External SensorBattery life:24 monthsTemperature resolution:2C25CPressure range:0-5.0BarPressure resolution:0.1BarWaterproof grade:IP67Transmitted power:10dBmEmission frequency:433.92MHz Features: Anti - theft sensor;Solar power charging;High and low pressure, leak alarm;Simple user interface;The internal sensor has a longer service life.High accuracy, Using Freescale imported chips;Real-time monitoring tire pressure and temperature;Smart start: parking automatically sleep, the car starts automatically wake up. Specification: Solar power chargingAdhere to windscreen for installationOperating frequency: 433.92Mhz 50KHzOperating voltage: 2.1-3.5VWorking temperature: -10 -85 Adhere to windscreen for installation Packing: 1 set Solar Charging Tyre Pressure Monitoring System