Safety indicator devices for lifting equipment are typically installed on cranes, hoisting equipment, and other heavy machinery to provide visual alerts and safety warnings. Their primary function is to display the equipment’s operating status, load conditions, or operational instructions through different colored light signals. This enhances communication between operators and ground personnel, ensuring the safety and efficiency of lifting operations. These signal displays are designed for high brightness and visibility, capable of performing in various lighting and weather conditions. Built for durability, vibration resistance, and immunity to interference, they are ideal for complex environments such as industrial and construction sites.