Welcome to Our carBig order has discount, please contact us for bulk order.Please note When turn on the Monitor, the Monitor displays ''--'' or ''00'', please don't worry.You only need to mount the sensor on the tire, wait for about 1 minute, and you will see the display shows the preure and temperature. Parameter 1.Monitoring system body Operating voltage: 3.7-5VStorage temperature:-30C-90Cworking temperature:-30C-85CRF Emiion frequency:433.92MH50KHzRF Signal sensitivity:-90dbmDisplay mode:LCD ColorBright screen current:6mABlack screen current:4mASize:85*95MM 2. External Sensor Battery life:24 monthsOperating voltage:2.1-3.6VStorage temperature:-30C-90Cworking temperature:-30C-85CTemperature resolution:2C25CPreure range:0-5.0BarPreure resolution:0.1BarWaterproof grade:IP67Transmitted power:10dBmEmiion frequency:433.92MHzSize:21mm*17mmweight:8.0glithium battery:CR1632Model Features: Solar power charging;High and low preure, leak alarm;LCD display screen, Simple user interfaceHigh accuracy, Using Freescale imported chips;Real-time monitoring tire preure and temperature;Smart start: parking automatically sleep, the car starts automatically wake up.Two units(PSI / Bar) changeable, you can set the one you like.Sensors/' batteryChangeableSpecification:Solar power chargingLCD displayingAdhere to windscreen for installationOperating frequency: 433.92Mhz 50KHzOperating voltage: 3.7-5 VWorking temperature: -20 -75 Adhere to windscreen for installationOperating frequency: 433.92Mhz 50KHzOperating voltage: 3.7-5 VWorking temperature: -20 -75Packing:1 set Solar Charging Tyre Preure Monitoring System4 External sensors1 set acceories (tool)