Alarms - 13703N0019

of equipment used in the specified system configuration. MTTR for this

system shall not exceed [30] [_____] minutes of on-site time for any one

element.

2.3.5

Alarms

Alarms shall include but not be limited to the following:

a.

Intrusion detection

b.

Tamper switches

c.

Fail-safe capability

d.

Line fault (for hardwire systems only) detection

e.

Power loss detection

2.3.5.1

Intrusion Detection

Include full range of interior point protection sensors, volumetric (space)

protection sensors, exterior fence sensors, and duress alarms. Duress

alarms shall be [annunciated to be clearly distinguishable from other

intrusion detection alarms] [silent at the reporting location and clearly

distinguishable from other intrusion detection alarms] at the central

reporting processor.

2.3.5.2

Tamper Switches

Enclosures, cabinets, housings, boxes, raceways, and fittings with hinged

doors or removable covers which contain circuits of the intrusion detection

system and associated power supplies shall be provided with cover having

corrosion-resistant tamper switches. Arrange tamper switches to initiate

an alarm signal when the door or cover is moved as little as 6 mm 1/4 inch

from the normally closed position. Mechanically mount tamper switches to

maximize defeat time when enclosure covers are opened or removed. Minimum

amount of time required to depress or defeat the tamper switch after

opening or removing the cover shall be one second. Enclosure and tamper

switch shall prevent direct line of sight to internal components and

prevent switch or circuit tampering. Conceal mounting hardware so switch

cannot be observed from enclosure exterior. Covers of junction boxes

provided to facilitate initial installation of the system need not be

provided with tamper switches if covers contain no splices or connections.

Tamper alarms shall be annunciated to be clearly distinguishable from

intrusion detection alarms. Tamper switches on doors which must be opened

to make normal maintenance adjustments to the system and to service power

supplies shall be the push/pull-set, automatic-reset type. Tamper switches

shall be:

a.

Inaccessible until switch is activated;

b.

Under electrical supervision at all times, irrespective of the

protection mode in which the circuit is operating;

c.

Spring-loaded and held in the closed position by the door, or

cover protected;

d.

Wired to break the circuit when the door or cover is disturbed;

and

SECTION 13703N

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