The Lezhong YTD-Y303E Beidou three-generation all-in-one machine is a terminal device integrating Beidou three-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 vehicle monitoring, emergency rescue, emergency communication, material management and other application scenarios.