Feature:Oil will be decreased when tires work under lower pressure, this item can reduce fuel consumptionEnvironmentally friendly and convenient power supplies: solar energy savingAir leakage alarm, prevent tires from bursting and prolong their lifetimeReal-time monitoring tire pressure and temperatureLight-weight design of emitterUse a high standard battery, more secureParameter of Receiver:Operating voltage: 3.7V-5VOperating temperature: -2.0℃-7.5℃Bright operating current: 10mARF Transmission frequency: 433.92 MHz50KHzDisplay: LCD color screenStorage temperature: -30℃-80℃Black operating current: 3mARF Signal reception sensitivity: -90dbmSize: 80*75*16mmParameter of internal sensor:Battery life: 5yearsWorking voltage: 2.1V-3.6VStorage temperature: -40F-257FWorking temperature: -40F-248FTemperature accuracy: 3.6F(77F)Working pressure: 0-99PsiPressure accuracy: 1.5PsiIP: IP67Transmit power: 10dBmTransmit frequency: 433.92MHzWeight: 30gSize: 72*53*20mmPackage Included:1 X LCD Display2 X English Instruction Manual4 X Sensor1 X USB Cable