This document describes the installation position and precautions of a car-mounted device. The device is suitable for installation on the inside of the front windshield of the vehicle, with the installation position height within 2.0m and must be installed in a position without metal obstructions within a range of 80° upwards based on the horizontal direction. At the same time, it is necessary to ensure that the inclination angle of the front windshield where the device is installed is not more than 45°. For vehicles with an inclination angle of more than 45°, an additional installation bracket is required. The device can receive signals from toll booth antennas and complies with the safety standards for road transport vehicles.
