Siemens Cerberus Pro

Siemens Cerberus Pro

OP921 Photoelectric Smoke Detector

Model OP921

The Photoelectric Smoke Detector (Model OP921) uses state-of-the-art microcontroller circuitry and surface-mount technology for maximum reliability. Model OP921 incorporates an optical sensor using a light-scattering detection principle. The device utilizes advanced software algorithms to analyze the signals, and provides highly stable and accurate smoke detection.

Model OP921 also uses state-of-the-art microprocessor circuitry with error check; detector self-diagnostics, and supervision programs.

  • Compatible with Siemens Model `H’-series devices on the same loop (with Cerberus PRO Modular | FireFinder XLS | FC/FV9–series fire-alarm control panel
  • Compatible with Model 8720 |DPU (device programmer / loop tester)
  • Each detector is self-testing:
    -self monitored for sensitivity with UL Listed limits
    -complete diagnostics performed every 10 seconds
  • Polarity insensitive via SureWire™technology
  • Functions with Model DB-11–series mounting bases
  • Tri-color detector-status light-emitting diode (LED) with 360°view
  • Field-selectable application-sensitivity profiles
  • Remote sensitivity-measurement capability
  • Utilizes advanced,microprocessor-based signal processing
  • Extended temperature-and-humidity operating range
  • Automatic environment compensation
  • Superior electromagnetic interference (EMI) and radio-frequency interference (RFI) immunity
  • Restriction of Hazardous Substances (RoHS compliant)
  • UL Listed | FM, CSFM Approved
    -UL 268: `Open Area Smoke Detection’
    -UL 268A (Duct) -`In-duct housing’use
    -UL 268A (Duct) -`Direct-in-Duct’use
    -ULC-S531: `Open Area Smoke Detection’-FM 3230 (Duct)
    -CSFM | File: 7272-0067:0258