How The JOMY Fire Escape Retractable Ladder Works
JOMY Retractable, Fire Escape Ladder Deploys instantly from Any Number of Evacuation Levels
The fire escape ladder is easy to use and opens in seconds. An opening handle is fitted at all evacuation levels. A quarter turn of this handle causes the fire escape ladder to deploy instantly over its complete height. The egress ladder is internally counterbalanced by springs for soft deployment and easy closing after use. A guardrail provides extra security.
The drawings herunder will give you a better idea of this.