Models Available

DH400ACDCI Ionization Duct Smoke Detector

DH400ACDCA Ionization Detector, ULC Listed

DH400ACDCP Photoelectronic Duct Smoke Detector

4-Wire Duct

Smoke Detector

© System Sensor 8/96

This document is not intended to be used for installation purposes.

A05-201-02

APPROVED

A Division of Pittway

3825 Ohio Avenue, St. Charles, IL 60174

1-800-SENSOR2 (736-7672), Fax 630-377-6495

http://www.systemsensor.com

Specifications

Length:

14.5 inches (37 cm.)

Width:

5 inches (12.7 cm.)

Depth:

4 inches (10.2 cm.)

Weight:

4.5 lbs. (2.0 kg.)

Operating

Temperature Range:

32

° to 120°F (0° to 49°C)

Operating

Humidity Range:

10% to 93% relative humidity

Air Duct Velocity:

500 to 4000 ft./min.

Features

• 24 VAC/DC or 120/220 VAC operation

• Simple change-out of photo or ion detector heads

• Air velocity rating from 500 to 4000 FPM

• Powered outputs for remote LED and sounder

• Remote test station option

• Remote sounder option

• Equipped with a DPDT auxiliary relay (two Form C

contacts)

• Easy and quick mounting to round or rectangular ducts

from 1

′ – 12′ wide

• Clear cover for convenient visual inspection

• UL 268A listed

• 3-year warranty

System Sensor DH400ACDC

4-wire duct housing will

accommodate either the 1451DH ionization sensor or the

2451 photoelectronic sensor. The twist-in, twist-out

detector heads allow easy removal for quick cleaning and

maintenance, or a change in application without removing

the duct housing. The DH400ACDC samples air currents

passing through a duct and gives dependable performance

for management of fans, blowers, and air conditioning

systems.

WARNING:

Duct smoke detectors have specific limitations.

DUCT DETECTORS ARE:

NOT a substitute for an open area smoke detector,

NOT a substitute for early warning detection, and

NOT a replacement for a building’s regular fire

detection system.

Refer to NFPA 72 and 90A for additional duct detector

application information.