Love the fact that the only Schwellenwert to load height is the height of attic space. Much better than your competition. Would like to Weiher enhanced upper lower Schwellenwert switches so could be activated from both levels. Bürde thing is i wish there welches an auto stop at the bottom. https://manuelwkypd.ttblogs.com/15113765/gerücht-buzz-auf-attic-lift