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  Bosch DS-D282A Photo-Electric Smoke Detector Heads
Bosch DS-D282A Photo-Electric Smoke Detector Heads


 

Our Price : $39.95


Product Code: DS-D282A

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Description
 
The D283A detectors detect the large smoke particles which typically result from wood, paper, and fabric combustion. The D283A is a smoke detector that also has a +135F (+57C) fixed temperature heat sensor. Use in areas where the ambient temperature does not exceed +100F (+38C). These detectors are compatible with 24 VDC circuits. These detectors have two components: the detector base and the detector head. The base is permanently attached and wired to a back box. The interchangeable heads quickly detach for replacement and cleaning without affecting circuit wiring. In normal conditions the light is absorbed in the chamber. The presence of a significant number of particulates reflects the light to the photodiode. After two consecutive measurements exceeding the basic level, the unit signals an alarm condition. The detector can be reset from the control panel, after an alarm condition clears, by interrupting power. Internal diagnostic test These heads have moisture-proof reed switches that react to an external magnet for testing.

The magnet test simulates a 4% to 6% smoke obscuration that places the detector in an alarm condition. This test results in specific LED and alarm circuit responses indicating the: detector is within calibration standards detector settings are outside sensitivity standards detector is not operational This test is especially useful in environmentally unstable or unclean areas. (HKFSD) Installation/Configuration Notes Note Smoke detectors are intended for detection circuits that protect people. Heat detectors are appropriate for circuits that protect property. The detector base installs over a standard four-inch back box and contains all the wiring. The detector head attaches to the base by aligning the head with the base and turning it clockwise.
Features
  • 24 VDC input
  • Mounts on low-profile base
  • Easy head removal for cleaning and servicing
  • Two-wire and four-wire base options
  • Flashing Power-On LED
  • Steady-On Alarm LED
  • Remote annunciation
  • Tamper-resistant locking base

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