Feature●【 APP Operate 】 This Auto Bluetooth TPMS support IOS and Android with APP"TPMSII", very stable, quick connection and real-time data transfer. When do the bluetooth scan, the APP will ask for permission of location, please accept as android system request●【 Five Alarm Modes】 Bluetooth Tire Pressure Monitoring System with High-temperature alarm and low battery alarm, quick & slow leak alarm, High voltage alarm●【Dynamically Monitor】 This motorcycle Tire Pressure Monitoring System is dynamically monitors all tire pressure and temperature, improves fuel efficiency, and prolongs tire life and ensures driver safety.●【High Accuracy】 Real time monitor with 2 TPMS Sensors, waterproof and anti - corrosion, anti -theft technology, fully qualified for rainy days. High sensitivity, good accuracy for measuring pressure and temperature●【Installation】 First, Scan the QR code we shipped with the product, download the APP to install. Second, Remove tire valve caps, put in anti-theft screws; Install outer sensor on tire valve in order; Hold the sensor, tighten anti-theft screw. make sure sensor installed on corresponding tire valve. The pressure range that can be set as from 36.2Psi / 250Kpa / 2.5Bar to 92.6Psi / 640Kpa / 6.4BarDescription Thank you for choosing our Bluetooth TPMS with 4 external sensors. This motorcycle Tire Pressure Monitoring System is monitor by APP, provide real-time monitoring of tire pressure and temperature with 5 alarm mode to keep you safe. This auto wireless TPMS system is easy to install. Just set the range of tire pressures and maximum temperature and you are set to go. Or just use the default settings for your parameters. Keeping your tire pressure in the correct range not only can saves lives will saves fuel, and extend tire life. In case of a sudden drop in tire pressure, even still above the minimum setting, you will be alerted to take the necessary precautions. For Android system: When do the Bluetooth scan, the APP will ask for permission of location, please allow to use it, it is android system request when develop the Bluetooth TPMS. Kindly let us know if need any help, we really would like to give fully support to each customer. Thank you! The range of this auto TPMS is from 36.2Psi / 250Kpa / 2.5Bar to 92.6Psi / 640Kpa / 6.4Bar