IP67. The Asec GL850/R is a face-fixing stainless steel external waterproof magnetic lock that is ideally suited for external applications such as security gates. It has a holding force of 363kg and the stainless steel magnet body has a protective epoxy compound coating which means that it is both corrosion resistant (ISO tested) and waterproof (rated to IP67).. Face Fixed. Holding force 363Kg. Dual voltage 12V DC / 24V DC.