ACCESS CONTROL TERMS M
Magnetic Contact: A device that sends a signal when the magnetic field between two monitored points is broken.
Magnetic Lock: A door lock made up of an electromagnet and a strike plate. The electromagnet is mounted in the door frame; the strike plate in the door. When power is applied to the electromagnet, the strength of the electromagnet keeps the door locked.
Magnetic Stripe: A band of ferrous material that is sealed onto or into a card key or credit card.
Magnetic Stripe Card: An access control card with a strip of recordable magnetic material, on which data is encoded.
Magnetic Stripe Reader: A reader capable of reading and interpreting cards using magnetic stripes to encode data.
Master Code Card: An access control card that grants access and exit at every card reader on the system.
Memory: The section of a host computer or a controller in which data and instructions are stored.
Modem: A communication device that converts computer serial data to an analog format that can be transmitted and received via telephone. Device that converts the computer system’s digital information into analog information and transmits it over a telephone line. Another modem must be used when the information is received to convert the information back from analog to digital.
Momentary Switch: A switch that, after being activated, automatically returns to its original position; a spring-loaded contact that, when pressed, closes two contacts, and when pressure is removed, opens the contact.
MOV: Metal oxide varistor, a device used to prevent the emf generated by the locks from damaging the control.