Access control devices of the electromagnetic lock module type
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United States of America Patent
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May 1, 2018
Issued Date -
N/A
app pub date -
Sep 14, 2012
filing date -
Sep 18, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An access control device including an electromagnetic lock module for selectively locking and unlocking a door in a door frame is provided. The access control device provides a lower profiled electromagnetic lock module to improve the aesthetics and functionality of the module, supports and integrates modern accessories such as CCTV, CCD cameras, passive motion detection with automatic background correction, digital notification display, automatic source voltage selection, door and lock status indicators, and ease of installation. The present invention further provides components and circuitry to enable connection of the electromagnetic control module to 12 or 24 volts DC or to an unfiltered rectified AC power supply.
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