Features: Large color screen: provide large and clear screen with beautiful visual effect. Large icons and large font display, easier to read. Day and night equally clear, super clear color screen, not afraid of direct sunlight. It can be charged by solar energy or by USB. When the car shaking, the monitor automatically switch; when the car is stationary, the monitor automatically hibernate, very intelligent. Tire pressure monitor starts immediately after starting the vehicle, no need to start the machine manually. Equipped with four external sensors, this tire pressure monitor is resistant to high temperature, low power consumption, long working life, small size, light weight, high accuracy of sensing tire pressure,easy to install. It can also withstand harsh environments. Four alarms: equipped with four alarms (high pressure, low pressure, high temperature and fast air leak alarm) to report abnormal tire conditions to the driver in time to help safe driving. The system is suitable for M1,N1 cars, commercial vehicles, off-road vehicles, jeeps and minibuses with maximum tire pressure less than 8 bar (gauge pressure). Specifications: Color: black MaterialABS Battery : CR1632 Operating frequency: 433.9200MHz±0.1MHz Display working voltage: 5V Sensor working voltage: 2-3.6V Sensor Working environment temperature: -40~+125 Display Working environment temperature: -20~+70 Monitoring range temperature: -40~+130 Monitoring range pressure: 0bar~3.5bar Accuracy temperature: ±2 Accuracy pressure: ±0.1bar Package size: 18 * 13 * 5cm Package weight: 225g Package List: 1 * Display 4 * External Sensor 1 * Instruction Manual