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other times. For more powerful monitoring, the iMXD includes a second “remote” alarm signal
consisting of one amp rated dry relay contacts. The relay is normally energized; it de-
energizes to show an alarm condition. It signals alarm from the beginning of the release
delay period until the door is relocked. The remote alarm relay is intended to signal the security
office that a security violation is occurring at the door. It ignores the nuisance delay period as
this should be seen as a "false alarm" unless the delay becomes irrevocable. It also continues to
signal until the door is relocked, correcting the security violation. The remote alarm relay should
also be considered a general "trouble" signal. If the board loses power, this relay will de-
energize signaling trouble. It is also used to signal optional alarm conditions described in
Section 4.4.
2.2. SPECIFIC CODE REQUIREMENTS
We must strongly emphasize that the following sections on code requirements should not be
considered definitive. They represent Securitron's best understanding of the individual codes
at the time of this manual's most recent revision. Codes, however, can change suddenly and are
also subject to local interpretations that may differ from the descriptions that follow. You
should consider these descriptions as a starting point which should be confirmed or
altered by the local authority having jurisdiction.
Also, many customers are interested in the issue of UL testing for systems of this type. The
iMXD is UL listed under the UL FWAX category which is also called Special Locking
Arrangements. UL tests all systems applying for such a listing under a test standard which
presently only recognizes the method of operation detailed in the NFPA 101 code for Special
Locking Arrangements. This is a limitation of the UL test standards. In many parts of the United
States, however, operational requirements as set by the authority having jurisdiction will vary in
minor ways from the exact requirements of NFPA 101. The iMXD system has been designed to
be able to perform these alterations in operating sequence so that it can meet differing
operating requirements as set by the different model codes. UL, however, has tested only
operation under NFPA 101 and therefore takes no position on the ability of the iMXD system
to meet alternate code requirements. The iMXD’s ability to do this is warranteed by Securitron.
In the following chart, we describe individual code requirements in 4 areas: Nuisance delay,
Release delay, Relocking and Power.
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