1.？ Take out the descent control device and hang the safety hook on the pre-installed fixing bracket or any stable bracket.
2.？ Throw the rope reel to the ground outside the building and loosen the rope.
3.？ Put the seat belt under your armpit and tighten the slider to a suitable elastic position.
4.？ Don't grab the ascending and descending rope, grab the seat belt and land slowly facing the wall. The descent device will safely send people to the ground at a uniform speed.
5. After landing, loosen the slider at a uniform speed, take off your seat belt and leave the scene.
6. The descent control device can be used alternately up and down, which can save many lives in a short time.
The descent controller uses video.