Silent Knight SD505-PHOTO


Addressable Photoelectric Smoke Detector

Lead Time: 6-8 Business Days

  • Factory New
Brand: Silent Knight Part #: 016827 Categories: , , , Manufacturer Part #: SD505-PHOTO Tags: , ,


IntelliKnight addressable photoelectric smoke detectors are the clear choice for commercial settings where smoldering fires are a threat. In addition to accurately detecting a smoldering fire, each SD505-PHOTO photoelectric detector has a unique address, which is recognized by the IntelliKnight panel. No precious seconds are wasted in determining location of an alarm.

The SD505-PHOTO compensates automatically for contamination in the environment. And detector testing is simple—even from a remote site. Like other IntelliKnight detector models, the SD505-PHOTO offers a low profile for pleasing aesthetics. The IntelliKnight family of detectors has been designed to use a common base, Model SD505-6AB, allowing complete application and placement flexibility. Combine all this with the features you’ve come to expect from Silent Knight smoke detectors—easy installation, stable operation, RF/transient protection, and vandal-resistant locking—and it adds up to a flexible solution for all your fire protection needs.


Weight 0.30 lbs
Dimensions 2.00 × 4.00 × 4.00 in

Detection Method



  • Low profile, 2 inches, including base
  • Simple and reliable addressing without mechanical switches
  • Automatic compensation for sensor contamination
  • Built-in fire test feature
  • Simple detector calibration testing through the control panel or remotely through Windows based computer software
  • Vandal-resistant locking features
  • Field cleanable
  • UL listed, meets NFPA 72 Ch 7 requirements
  • CSFM Approved
  • MEA Approved
  • FM Approved


Addressable Photoelectric Smoke Detector
Silent Knight – Data Sheet
Addressable Detector and Sounder Base Compatibility Chart
Silent Knight – Compatibility Guide
SD505 Analog Smoke Sensors
Silent Knight – Installation Instructions


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