2020 USB Solar Charging Motorcycle TPMS Motor Tire Preure Tyre Temperature Monitoring Alarm System with 2 External Sensor Descriptions:This tire preure monitoring system is designed to provide you with an extra protection while driving. It will warn the tire condition of the car in advance.After installing TPMS, it can monitor the tire preure and temperature in real time. If abnormal tire preure and temperature are detected, the system will send real-time warning sounds and flashing icons on screen to inform you, avoiding traffic accidents.Features:- Supports solar charging- IP65 waterproof- High-efficiency solar panel with super long battery time- Built-in large capacity lithium battery, no worry in rainy days- Accurate monitoring of tire preure and temperature stability all the way- LCD high precision display- High volume alarm sound alert- Long receiving distance, stable signalSpecifications:Mani unitWorking temperature: -20 ~ + 80 CStorage temperature: -30 ~ + 85 CWorking voltage: DC 5VFrequency: 433.92MHz 20.00MHzSensorWorking temperature: -20 ~ +80 CStorage temperature: -30 ~ +85 CPreure range: 0 ~ 6.6BarPrecise preure: +/- 0.1BarAccurate temperature: +/- 3 CTransmitting power: