The GY806 Low-Voltage Motor Intelligent Comprehensive Protection Device is based on a 32-bit microcontroller, supplemented by industrial-grade peripheral chips and scientific algorithms, ensuring reliable and sensitive protection with high measurement accuracy. Multiple anti-interference measures are adopted, giving the device extremely high anti-interference capability. In the design of the device, standardized and modular hardware design, high-precision A/D conversion, dedicated power modules, and crystal timing are employed. For the user interface, it features a large-screen LCD with Chinese display, automatic backlight, menu-based operation instructions, and authorized passwords for important operations to effectively prevent misoperation. This comprehensive protector stores one set of settings and allows online querying and modification. It includes functions such as sequence-of-events recording, event logging, remote telemetry, and remote signaling transmission. It has a comprehensive self-check function, with fault localization down to the main chip. It comes with isolated RS485 and CAN standard communication interfaces, and communication can be achieved using communication cables.