The product has been optimally configured before we send it from the factory so it can be used directly when you receive it. It is not recommended to set up the product before you can use it skilled. Bullet Points: 12 Charging Methods: Our tire pressure monitoring system features the built- 1100mAh lithium battery which supports solar wireless charging and USB charging, so there is no need to worry about the problem of being unable to charge without power. It is universally suitable for two-wheeled vehicles, such as motorcycles, bicycles, electric vehicles other two-wheeled vehicles. 27 Alarm Modes: TPMS features 7 kinds of alarm modes (including quick leak alarm, high/low pressure alarm, high temperature alarm, battery alarm sensor failure alarm). You can freely set the pressure temperature alarm values. 3Smart Chips: Adopts advanced smart chips to make data more accurate timely, thus preventing emergencies time; Wireless sensing technology allows data to be transmitted real time, with strong received signals, no interference, higher stability. The monitor will quickly make an alarm to warn the driver when the tire pressure temperature is found to be abnormal. 4Perfect Quality & Weatherproof: High-quality materials make TPMS feature high sealing performance, waterproof moisture-proof, can work well all different areas under any climate, such as sunny, rainy, snowy, cloudy bad weather. 5Real-time Monitoring: TPMS also provides real-time monitoring of all tire pressure temperature, thus improving fuel efficiency, extending tire life, ensuring the safety of driver. Specifications: Name:SolarPowerTirePressureMonitoringSystem Workingtemperature:-30~-70 Pressureaccuracy:0.1bar Temperatureaccuracy:2 Sensortransmissionfrequency:433.92MHz Replaceablebattery:Yes(built-1100mAhlithiumbattery) Material:ABS+PC Waterproofrating:IPX67(MonitorYSensors) Productsize:about45*45*22mm/1.77*1.77*0.87inch PackingList: 1*TirePressureMonitoringSystemforMotorcycle 2*Sensor 1*Bracket 1*USBChargingCable 1*Manual 1*WrenchforInstallation Notes: Duetothelightingeffectsshootingangles,thecoloroftheitemthatshownthepicturemighthaveanuance. Duetomanualmeasurement,theremightbeatolerancetheproductsize.