The LED status indicator provides intuitive feedback on the device's power-on, standby, and fault working states, with clear and prominent prompts. Low-power luminous elements with minimal heat generation, capable of prolonged continuous illumination to reduce frequent replacement wear and tear. Multiple colored lights are available for selection, with different colors indicating equipment conditions to facilitate quick identification of device operational status. Standardized opening dimensions for easy installation and replacement, compatible with most electrical appliances and control cabinet mounting positions. Built-in stable current-limiting circuit, compatible with various AC/DC voltages, ensuring uniform lighting without flickering or strobing.