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  Bosch DS-D278S Four Wire Addressable Detector Base
Bosch DS-D278S Four Wire Addressable Detector Base


Our Price : $28.69

Product Code: DS-D278S


Use the D278S Four-wire Addressable Detector Base with smoke and heat detector heads to provide early warning fire detection for life safety and property protection systems. The D278S is a 12 VDC base for use in systems controlled by a D7412G or D9412G 12 VDC Control Panels with a D8125 POPEX Module. The D278S has a built-in POPIT to provide individual addresses on the FACP data expansion circuit. The D278S accepts the D285/D285TH Photoelectric Smoke Detector Heads, the D286 Ionization Smoke Detector Head, and the D603, D604, and D605 Heat Detector Heads. When used with the D285 Series detector heads, the D278S indicates Chamber Check trouble to the control panel through the POPIT bus. The Chamber Check trouble indication appears on the keypads as a fire trouble.


Environmental Considerations:
-Temperature (operating): +32F to +100F (0C to +38C)

Mechanical Properties:
-Color: Bone white
-Dimensions (diameter x D): 6.375 in. x 0.9 in. (16.2 cm x 2.3 cm)

Power Requirements (Auxiliary Supply):
-Current (alarm): 40 mA
-Current (standby): 2.5 mA
-Voltage (operating): 9.6 VDC to 13.9 VDC
  • Low-profile modular design
  • Addressable application
  • Data In and Data Out terminals
  • Easy head removal for cleaning and servicing

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