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Descent control device,escape line device, security A descent controldevice is for emergent escape from a high building, and it is widely used in hotelapartmenthospitalhouse and so on. It can be used as building rescue device when emergency happens and used as high altitude working device usually. Characteristic: Reciprocating, convenient to use, applied for self-help and rescue. Main parameters: Max height for use 180m(decent height is depend on the length of decent rope) Safety belt intensity 3680N Safety hook intensity 10000N Decent speed Load 35(kgs) 0.49-0.51(m/s) Load 65(kgs) 0.88-0.91(m/s) Load 100(kgs) 1.23-1.25(m/s)