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D2 D2 D2
D2 Data Sheet Data Sheet (pdf)
D2 Installation Instructions Installation Instructions (pdf)
D2 Engineering Specs Engineering Specs

2-wire photoelectric duct smoke detector


D4120 D4120 D4120
D4120 Data Sheet Data Sheet (pdf)
D4120 Installation Instructions Installation Instructions (pdf)
D4120 Engineering Specs Engineering Specs

4-wire photoelectric low-flow duct smoke detector


D4240 D4240 D4240
D4240 Data Sheet Data Sheet (pdf)
D4240 Installation Instructions Installation Instructions (pdf)

240 V, 4-wire photoelectric low-flow smoke detector


D4S D4S D4S
D4S Data Sheet Data Sheet (pdf)
D4S Installation Instructions Installation Instructions (pdf)

4-wire photoelectric sensor component only


D4P120 D4P120 D4P120
D4P120 Data Sheet Data Sheet (pdf)
D4P120 Installation Instructions Installation Instructions (pdf)

4-wire photoelectric power board component only

Note: For pendent mount applications where remote testing is needed, the D4P120 needs to be used with the 2D51 and B210LP.


D4120W D4120W D4120W
D4120W Data Sheet Data Sheet (pdf)
D4120W Installation Instructions Installation Instructions (pdf)
D4120W Engineering Specs Engineering Specs

Watertight 4-wire photoelectric duct smoke detector


2D51 2D51 2D51
2D51 Data Sheet Data Sheet (pdf)
2D51 Installation Instructions Installation Instructions (pdf)

4-wire conventional photoelectric sensor head



Discontinued Products
Discontinued Model Installation Instructions Data Sheet Replacement Model
DH400ACDCIHT DH400ACDCIHT Brochure DH400ACDCIHT Data Sheet D4120
Conventional 4-Wire Ionization High-Temperature Duct Smoke Detector
DH100ACDCI DH100ACDCI Brochure DH100ACDCI Data Sheet  
Conventional 4-Wire Ionization Duct Smoke Detector [Should I Use a Photoelectric Detector?]
DH100ACDCLP DH100ACDCLP Brochure DH100ACDCLP Data Sheet D4120
Conventional 4-Wire Photoelectronic Duct Smoke Detector with Low-Flow Technology
DH100ACDCLWP DH100ACDCLWP Brochure DH100ACDCLWP Data Sheet D4120W
Conventional 4-Wire Photoelectronic Watertight NEMA 4 Rated Smoke Duct Detector with Low-Flow Technology
DH100LP DH100LP Brochure DH100LP Data Sheet D2
Conventional 2-Wire Photoelectronic Duct Smoke Detector with Low-Flow Technology