... size, light weight,, compact structure, easy to carry.2.hoisting fast:Suitable for places (indoor and outdoor) hoisting materials3. ... Wide application scope:Using the 220/380 power, used for decoration company, hoisting company, installation company, moving company, ... operation. If need to immediately stop, only need to cut off the power supply,it will beSafe and reliable. Model No.SLA-1SLB-2SLC ...