es , that require no power , are inexpensive , have a long shelf-life and are easy to use .
www . AmericanSecurityToday . com July 2022 - Edition 62
HRES Escape Systems are available in both perma- nent and portable solu- tions for easy attachment to a structure .
Each of the systems incorporates a Controlled Descent Device ( CDD ), which works like a pul- ley . Each CDD incorporates a po- ly-steel cable with a neoprene inner lining and braided poly- ester jacket to protect it against abrasion , moisture and heat .
Cable lengths are currently available up to 1000 feet ( 305 meters ) or about 100 floors . Other options are available for locations exceeding these heights .
In operation , a user slides an Escape Harness over themselves , climbs over their balcony or window and the CDD slowly low- ers them automatically at the rate of 3 ft per second , which is comparable to the descent of a slow elevator .
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