Signature Series smoke detector is the
most advanced and most reliable device in its class. Designed for
easy installation and superb reliability,
represents the
perfect balance of practical design and advanced technology.
feature a unique design that speeds instal
lation and simplifies maintenance. Removable dust filters, confor
mally coated circuit boards, and optional water-resistant gaskets
keep contaminants away from components, ensuring years of
trouble-free service. When cleaning is required, the assemblies
come apart easily and snap back together in seconds.
A Signature Series photoelectric sensor
is incorporated into
the design of each SIGA-SD duct smoke detector. This sensor
inherits the power and benefits of this exceptional line of intelligent
Signature Series sensors gather analog information from their
smoke sensing elements and convert it into digital signals. The
sensor measures and analyses these signals and compares the
information to historical readings and time patterns to make an
alarm decision. Digital filters remove signal patterns that are not
typical of fires, which virtually eliminates unwanted alarms.
Standard Features
Less than 2″ deep for easy installation and applications where
space is tight
-20°F to 158°F (-29°C to 70°C) operating range with 100 ft/
min. to 4,000 ft/min air velocity rating assures reliability under
harsh environmental conditions
Status LEDs remain visible through clear assembly cover
Cover monitor switch for added security
Standard sampling tube spacing for easy drop-in migration
from other detectors
Sampling tube can be installed with or without the cover in
place and can be rotated in 45-degree increments to ensure
proper alignment with duct airflow
15.2 to 19.95 Vdc operation
Magnet-activated test switch
One Form C auxiliary alarm relay for controlling ancillary equip
ment (e.g., HVAC controls)
No special tools required for easy access to field connections
Signature Series intelligence
Environmental compensation with differential sensing for reli
able, stable, and drift-free sensitivity
Wide 0.79% to 2.46% obscuration/ft. smoke sensitivity
Identification of dirty or defective detectors