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400 Series
™
High-Temperature
Duct Smoke Detector
Models Available
DH400ACDCIHT
4-wire ionization high-temperature duct
smoke detector
Product Overview
System Sensor DH400ACDCIHT is designed for interior
or exterior duct applications where extreme temperatures
can exceed standard detector capabilities. (For exterior
applications use DH400 OE-1 outdoor enclosure.) The
DH400ACDCIHT samples air currents passing through a
Temperature range 32° – 158°F (0° – 70°C)
Air velocity rating from 500 – 4,000 FPM
24 VAC/DC or 120/220 VAC operation
Easy and quick mounting to round or rectangular
ducts from 1′ – 12′ (0.3 – 3.7 meters) wide
3-year warranty
duct to provide dependable performance for management
of fans, blowers, and air conditioning systems. The twist-in,
twist-out 1451DHHT High-Temperature ionization detec-
tor head allows easy removal for quick cleaning, mainte-
nance, and replacement without removing the duct housing.
Agency Listings
DH400ACDCIHT
APA451
RTS451KEY
RTS451
RA400Z
PA400W
UL S911
UL S4011
UL S2522
UL S2522
UL S2522
UL S3593
Accessories
System Sensor provides system flexibility with a variety of
accessories, including two remote test stations, and several
different means of visible and audible system annunciation.
As with our duct detectors, all duct detector accessories are
UL listed.
ALARM
ALARM
POWER
RESET
ON
TEST
F
I
R
E
PA400W with
PS24LOW Add-on Strobe
ALARM
RESET
APA451
Piezo
Annunciator
RTS451KEY
Remote Test
Station with Key
RTS451
Remote Test
Station
RA400Z
Remote
Annunciator
SYSTEMSENSOR [ SYSTEMSENSOR ADVANCED IDEAS. ]
