SD505-AIS | Silent Knight Addressable Ionization Smoke Detector for IntelliKnight Systems

Silent Knight · Fire & Life Safety

Description  The Silent Knight SD505-AIS is an addressable ionization smoke detector designed for IntelliKnight fire alarm systems. It provides rapid response to fast-flaming fires that produce minimal visible smoke, making it ideal for high-risk environments such as hospitals and industrial facilities. With a low-profile design and automatic contamination compensation, the SD505-AIS ensures reliable detection and simplified maintenance.     Technical Specifications  Condition New/Never Used Surplus Brand Silent Knight Category Fire Safety Part Number SD505-AIS Subcategory Smoke Detector Detector Type Addressable Ionization Smoke Detector Radioactive Source Americium-241, 0.098 µCi Operating Voltage 24 VDC Current Consumption 0.55 mA standby / 0.55 mA alarm Height 2.25 in (with base) Diameter Approx. 3.9 in Operating Temperature 32°F to 120°F (0°C to 49°C) Humidity Range Up to 93% RH non-condensing Air Velocity Range 0–300 FPM Mounting Options 4” Square, 4” OCT, Single gang mud ring Status Indicators LED blink (standby), steady (alarm) Compatible Bases SD505-6AB and interchangeable with APS/AHS models Certifications UL Listed, NFPA 72 Compliant, CSFM Approved, MEA Approved, FM Approved Color Off-White Weight ~0.43 lbs     Information About SD505-AIS The SD505-AIS is part of the Silent Knight IntelliKnight detector series, engineered to deliver fast and accurate detection of flaming fires through ionization technology. Its dual-chamber design uses a radioactive source to measure current differences between a sampling and reference chamber, triggering alarms upon the presence of combustion gases or smoke. The detector features a status LED for communication and alarm indication, along with remote calibration viewing via IntelliKnight panels or compatible software. Built for easy installation, it uses the common SD505-6AB base, enabling interchange with photoelectric and heat detector models. Key Features: Ionization Detection Technology: Provides early warning for flaming fires with minimal visible smoke. Dual-Chamber Design: Uses a sampling and reference chamber for precise monitoring of invisible gases. Automatic Contamination Compensation: Maintains consistent sensitivity in challenging environments. Low-Profile Housing: Measures only 2.25 inches with base for discreet installation. Status LED Indicators: Blinks during standby, steady during alarm for clear supervision. Remote Calibration Viewing: Allows detector calibration checks via panel or PC software. Vandal-Resistant Locking: Field-selectable security feature prevents tampering. UL, FM, CSFM, and MEA Approved: Complies with major fire safety standards. The SD505-AIS delivers the reliability and speed required for environments where rapid fire growth is a concern.

Brand: Silent Knight · Category: Fire & Life Safety

Key features

• Ionization Detection Technology: Provides early warning for flaming fires with minimal visible smoke.
• Dual-Chamber Design: Uses a sampling and reference chamber for precise monitoring of invisible gases.
• Automatic Contamination Compensation: Maintains consistent sensitivity in challenging environments.
• Low-Profile Housing: Measures only 2.25 inches with base for discreet installation.
• Status LED Indicators: Blinks during standby, steady during alarm for clear supervision.
• Remote Calibration Viewing: Allows detector calibration checks via panel or PC software.
• Vandal-Resistant Locking: Field-selectable security feature prevents tampering.
• UL, FM, CSFM, and MEA Approved: Complies with major fire safety standards.

Specifications

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