TPMS with LCD display & LED indicator Tire Pressure Monitoring System Backlighting LCD indicator & warning 3-Stage LED indicator for status Friendly operation& Inflating-valve installation All time tire pressure & temperature monitoring Keep safe & comfort driving & saving petrol Basic technical data: 1.Tire sensor: Working voltage range: DC2.1-3.6V Working currency: 0.6μA-9mA Transmitting frequency: 433.92MHz Mode: FSK Detecting range of temperature: -40-+125 Detecting range of pressure:0-3.5bar Battery duration: 5 years Dimension: 71*31*19mm 2.Receiver: Working voltage range: DC2.1-3.6V External power supply: DC9-15V Working currency: 10μA-30mA-75mA Receiving frequency: 433.92MHz Battery duration: 1200mAh, about 1.5 month Dimension:83*41*18mm Please visit our website for more items.