Security Door Controls of Camarillo, California, offers the SDC E1200-390MP Retrofit Mounting Plate, which uses the same template and existing mounting holes for replacing the discontinued Locknetics 390+ with the SCD E1200 magnetic lock. There is no need to replace the armature—only a new wiring hole is required. The SDC E1200 is ordered separately. The SDC 1511AMP Retrofit Armature Mounting Plate enables replacement of the Locknetics 390+ with SDC Grade 1, 1511, and 1571 energy-saver locks using the existing bolt hole. The new mounting plate covers the previous lock mounting holes.