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Bosch Security and Safety Systems North America

Duct smoke head, 2-/4-wire, 12/24V

Commercial Product No.: D285DH | Product No.: 4.998.140.344
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Expected delivery:28/11/2017

RMS Ripple (maximum) 25% of DC input
Voltage (input) Two-wire: 8.5 VDC to 33 VDC Four-wire: 10 VDC to 30 VDC
Alarm Two-wire: depends on control panel which must limit the alarm current to 100 mA maximum Four-wire: depends on detector base, refer to pertinent base specifications
Standby Two-wire: 0.08 mA at 12 VDC, 0.09 mA at 24 VDC Four-wire: 24 mA at 12 VDC or 24 VDC
Relative Humidity: Up to 93%, non-condensing
Temperature (operating): +32°F to +100°F (0°C to +38°C)
Radio Frequency Interference (RFI) Immunity: No alarm or lockup on critical frequencies in the range from 26 MHz to 950 MHz at field strengths less than 50 V/m
Color: Bone white
Dimensions (diameter x D): 4 in. x 1.25 in. (10.2 cm x 3.2 cm)

Parts included with this product

Quantity Component
1 Detector head with dust cover
1 Literature - Installation Manual, Technical Service Note on installation

Title Type Language
Title
CSFM
Type
PDF
Language
Title
HKFSD
Type
PDF
Language
en-US 
Title
MSFM
Type
PDF
Language
en-US 
Title
Datasheet
Type
PDF
Language
en-US 
Title
Installation manual
Type
PDF
Language
en-US 
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