IP67. The Asec GL1200NTBR is a face-fixing stainless steel external waterproof magnetic lock that is ideally suited for external applications such as security gates. It has a massive holding force of 545kg 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 545Kg. Operating voltage 12V DC.