TPMS 24 Hours Auto Car Tire Tyre Preure Monitoring System Gauge With 4 Internal Sensors Description 1.Use lithium battery to get electricity,with 4 internal sensors.2.LCD pannel,with extra mini USB port for charging.3.Light weight design for sensor,no need to adjust to balance when the tiremoving.4.Monitoring the tempreature and preure with high degree accuracy,display for 4 tires at the same time.5.Save fuel,forsee air leakage,reduce tire wearout,balance tirepreure,ensure safety driving.6.RF wirele technology,can auto-alarm,when tire preure andtemperature is abnormal.7.With two preure unit"PSI,BAR " and two temperature unit"C,F" foroption.8.Support tire position exchange function.9.Sensor waterproof grade:IP5K4K.10.With FREESCALE Chip and RENATA anti-explosion battery.Displayer ParameterWorking Temperature:(-20C~+80C)Storage Temperature:(-30C~+85C)Input Voltage:DC 5VTransmitting Frequency:433.92MHzSize( L*W*H )mm:76*62*50mmWeight:78gSensor ParameterWorking Temperature:(-40C~+105C)Storage Temperature:(-40C~+120C)Preure Range:0~116psi(0~8bar)Preure Precision:1.5PSI(0.1bar)Temperature Precision:3CTransmitting Power: 5 yearsSize( L*W*H )mm:69*32*15mmWeight:29g