AT-17H is a 4G all-network vehicle-mounted positioning terminal specially designed for the Internet of Vehicles. It integrates 4G all-network wireless communication technology and GPS/BDS satellite navigation and positioning technology. The terminal adopts an industrial-grade high-integration fully built-in antenna design. The device is equipped with a 3-axis sensor and operates in an intelligent power-saving wake-up mode. It features temperature and humidity detection, SOS alarm, battery level indicator lights, intercom function, vibration alarm, overspeed alarm, and removal alarm. Three modes can be set to meet various application scenarios of customers, and users can send instructions to switch working modes. When paired with a global positioning service platform, the location of the device can be queried anytime and anywhere.