Nascom’s N505AUTM 3” TRACK MOUNT FLIP SWITCHTM with universal magnet handles commercial and industrial overhead door applications. The TRACK MOUNT FLIP SWITCHTM combines the installers’ choice of contact configuration with an N35 grade NdFeB magnet for maximum gap performance. The closed loop versions of the N505AUTMC prevent false alarms caused by the up and down movement of overhead doors with our unique NO DEAD SPOT™ technology. The switch can be mounted with the cable in either direction, without loss of gap.