518APH 12 Volt Magnetic Switch
TATTLETALE® annunciators and Magnetic Switches are the nerve centers that translate SWICHGAGE® contact operations into decisions and operate the alarm or shutdown device. They are the electrical load carrying devices for the alarm or shutdown device. TATTLETALE® annunciators indicate which monitored function failed leading to the alarm or shutdown whereas magnetic switches do not. Magnetic switches operate basically as a latching relay.
Coil Resistances (OHMS): 518APH – 339 for 12
Murphy Tattletale® Annunciators and Magnetic Switches Brochure
Brand Name: Murphy  
