1The headup display of the car is combined with the two functions of the tire pressure monitoring system. It can not only drive without lowering the head, but also pay attention to the dynamics of the vehicle at any time. At the same time, you can also see the status of the vehicle tires and tire pressure monitoring. 2The system adopts LCD color screen display, which is clear at a glance and can be seen more clearly, and is perfectly integrated with HUD. 3Alarm function, including tire leak alarm, tire low pressure alarm, tire high pressure alarm, tire high temperature alarm, tire sensor low battery alarm. 4It has solar charging function, MTK highperformance GPS module, cool mini body design, compact and does not take up space. 5Support display GPS, vehicle speed, altitude display, satellite time, car temperature Item Type: Solar Tire Pressure Monitor Material: ABS+PC Power Supply: DC 5V Working Temperature: -40-80 Fitment: Universal Battery Type: Lithium battery Battery Model: 503030 Battery Capacity: 400mAh (built-in battery) Host Size: Approx. 9.4x2.8cm/3.7x1.1in Key Description:Left is the back button M is the menu key Right is the forward key Installation Steps:Receiving Host Installation:Take out the receiving host, and then fix the receiving host with a non-slip mat in a suitable position on the instrument panel to prevent it from falling. When using this product for the first time, first check whether it has electricity. If there is no electricity or it does not turn on, you must take out the USB cable and connect it to the USB port in the car for charging. After it is fully charged, it can be charged by solar energy without connecting the USB. Tire Pressure Sensor Installation:1. Screw in the gasket first 2. Tighten the sensor 3. Tighten the gasket counterclockwise to hold the sensor 4. Tighten the sensor and tighten it counterclockwise with a wrench Tire Pressure Sensor Pairing:1. Long press the M button to enter the setting, press the back button twice, then press the M button once to enter the flashing state, and then press the back button and the forward button at the same time for 5 seconds to enter the tire pairing 2. Twist Down The Tire Valve Cap After Installing The Sensor, keep the air pressure between 0.7-1.5 Bar, and inflate or deflate the tire. The bottom row of the display shows a number to prove that it is matched ( The corresponding numbers represent: 0 left front wheel 1 right front wheel 2 left front wheel 3 right rear wheel) Long press the "M" key to save. Introduction of Receiving Host Opening/Closing and Key Functions:1. On/Off button In the shutdown state, you can choose to press the "back button" of the receiving host to start the system; In the power-on state, if you want to shut down, you can only choose to long press the "back button" to shut down. 2. M key In the normal working state of the receiving host, long press the "M key" to enter the "menu and settings". In the setting, it is also the "Select and Confirm" button. 3. Forward button Long press the "forward button" for 5 seconds to switch between HUD mode and TPMS tire pressure monitoring mode In the setting, it is believed that "Add" Key The brightness of the display can be increased in the boot state 4.