The speed difference automatic controller is also called the speed difference anti-fall device. It is used to prevent accidental falls when people work at high altitudes. Even if they fall accidentally, it can quickly and effectively ensure the safety of personnel. It can quickly brake and lock the fall within a limited distance. personnel and protect their lives. The sealed aluminum-gold shell anti-fall device is self-controlled due to changes in speed. It is a new patented safety product. It effectively controls the human body's uncontrolled fall through the anti-ratchet double-disc braking system. The rope can be pulled out at will during operation. . It does not affect normal operations under normal up and down conditions (less than 2 meters per second); the specification lengths are 3 meters, 5 meters, 7 meters, 10 meters, 15 meters, 20 meters, 30 meters, 40 meters, and 50 meters. The air fall prevention "speed differential automatic controller" is a novel safety protection device specially designed for high-altitude workers to prevent high-altitude falls. This product has novel design, reasonable structure, beautiful appearance, easy to use, short sliding distance, small impact force, large range of movement, stable locking, high safety factor, high temperature resistance, wear resistance, light weight, small size, easy to carry, etc. advantage.