High Rise Escape Systems uses a Controlled Descent Device (CDD) that adjusts to the user’s weight and lets them descent at a rate of approximately 1 to 1.5 metres per second.
...the ceiling, endangers the user (i.e. no escape route, smoke, explosion hazard, etc.), or otherwise requires the expertise of a fire department. Typically, a fire extinguisher consists of a hand-held cylindrical pressure vessel containing an agent which can be discharged to extinguish a fire.