Electromagnetic door lock with on-board programmable access cont

Details Electromagnetic door lock with on-board programmable access cont Electromagnetic door lock with on-board programmable access cont

1994-03-31

1995-12-26

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

2922515, 340543, 340545, 361161, 361171, G08B 1306, G08B 1308

Patent

active

054791510

ABSTRACT:
An electromagnetic door lock system employs an on-board microprocessor which is mounted in the housing for the electromagnet. The microprocessor is pre-programmed with possible operating parameters which are then selected at the installation site. In one embodiment, a contact activatable data reader is mounted at the housing to provide various input data for the microprocessor. The microprocessor is also capable of being interrogated to reveal the preset operating parameters and other information, including the identification of individuals requesting to egress through the associated doorway.

REFERENCES:
patent: 4755799 (1988-07-01), Romano
patent: 4831374 (1989-05-01), Masel
patent: 5065136 (1991-11-01), Frolov et al.
patent: 5153561 (1992-10-01), Johnson
patent: 5289534 (1994-02-01), Lester et al.

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