Main Features
1)  The lock and gate use key-lock system,the interface is level with anti-snag function,the rope is winding rapidly when descending;the direction of oval-shaped lock is fixed by any long axis,suitable for rapid descent of spiral rope.
2)  Two-step key-lock system(TL) is suitable for frequent door opening and closing,it avoids risks for forgetting to close the door in hurry and reduces risks fo false door opening in operation process.
3) Anti-snag system prevents it from catching clothing and fittings,reducing risks of and increasing descending speed.