YTD-Y303G Beidou third-generation vehicle-mounted all-in-one machine is a terminal device integrating Beidou third-generation GNSS positioning and RDSS communication functions. Extended public network communication function, built-in lithium battery, and IP67 waterproof and dustproof capability. The terminal design has high integration, small size and easy to install. It can be quickly temporarily installed or fixedly installed on various mobile platforms such as vehicles. It has anti-tamper alarm function and is suitable for application scenarios such as emergency communication, vehicle monitoring, emergency rescue, material management and other application scenarios.