www.sdmmag.com/articles/86171-em-lock-has-early-warning-features

EM Lock Has Early Warning Features
February 7, 2011
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The new EW8310 early warning electromagnetic lock is more than an electromagnetic lock; it also can sense when an intruder is attempting to gain access into a building through a locked door. The patented, built-in sensor detects attempted forced entry and activates a local and/or remote alarm prior to the integrity of the door being compromised — well before a break-in has occurred. An alarm in the immediate location will ward off would-be thieves before they have a chance to gain access. The light panel provides highly visible information related to the status changes of the door.
RCI — Rutherford Controls Inc.
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