Feature:1. High-efficiency solar panels, super long working duration;2. Large-capacity built-in metal lithium battery;3. Accurate tire preure monitoring;4. LCD high precision liquid crystal display;5. Large volume alarm sound alert;6. A variety of tire preure units are available;7. Long receiving distance and stable signal;Specification:Sensor type: External sensor, Internal sensor (Optional)Tire preure setting range: 0.1~4.2 BarTire temperature setting range: 60~90 Working temperature range: -20~+80 Storage temperature range: -30~+85 Power-on voltage: DC 5VFrequency: 433.9200MHz0.1MHzSize: 94*84*26.5mm/3.70*3.31*1.04"Gro weight: 210g (external sensor), 300g (internal sensor)Note:1. There may be slight size deviations due to manual measurement, different measuring methods and tools.2. The picture may not reflect the actual color of the item because of different pographing light, angle and display monitor. 1 X Main Unit4 X Sensors1 X Bracket1 X USB Cable1 Set X Installation Tools (Optional)1 X Instruction Manual