Features: HD LCD display.Solar charging board & USB Charging.TPMS high-precision tire preure monitoring system.Balance tire preure, reduce tire wear, thereby ensuring safe driving.Suitable for 6-wheel vehicles such as trucks/Caravans/RV/buses.Real-time automatic high-precision monitoring of the temperature and preure of 6 tires.There will be a beep when abnormal is detected.TPMS:Battery: built-in 800mAh Li-ion batteryOperating voltage: DC 5VRF transmiion frequency: 433.92MHzPreure unit: psi/barTemperature unit: Deg.C / Deg.FFuntion: Real-time monitoring of tire preure,High temperature alarm,Low battery alarm,Low tire preure alarm,Tire preure high alarm,Air leak alarm,Sensor-update dataExternal Sensor:Working preure: 0 -122 psi / 0 -8.5 bar and0 -165psi / 0 -14.5barTransmiion frequency: 433.92MHzWorking voltage: 2.0 - 3.6VWaterproof grade: IP67Package Included:1 x Monitor1 x Installation tool6x Lock Nut6x External sensor1x USB Cable1 x User Manual