... casting aluminium case,inside have change-over switch,zinc alloy lock,brass key; Roller door switch/Key SwitchModel:OL-8102Application:Automatic door ... /Construction: High pressure casting aluminium case,inside have change-over switch,zinc alloy lock,brass key;This lock have good seal ... .Size: 70*70*80 mmPackage information:20pcs/Carton, The weight of unit product: 0.56KG, GW/Carton:11.2KG, NW/Carton ...