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

Models Available

DH400ACDCIHT

4-wireionizationhigh-temperatureduct

smokedetector

Product Overview

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.

High-Temperature

Duct Smoke Detector

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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

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.

APA451

Piezo

Annunciator

ALARM

POWER

RTS451KEY

Remote Test

Station with Key

ALARM

ON

RESET

TEST

PA400W with

PS24LOW Add-on Strobe

F

I

R

E

RTS451

Remote Test

Station

ALARM

RESET

RA400Z

Remote

Annunciator

Agency Listings

DH400ACDCIHT

ULS911

APA451

ULS4011

RTS451KEY

ULS2522

RTS451

ULS2522

RA400Z

ULS2522

PA400W

ULS3593