SD505-APS | Silent Knight Addressable Low-Profile Photoelectric Smoke Detector
Silent Knight · Fire & Life Safety
Description The Silent Knight SD505-APS is an addressable, low-profile photoelectric smoke detector designed for IntelliKnight fire alarm systems. It provides reliable detection of smoldering fires while automatically compensating for sensor contamination. Compact, easy to install, and vandal-resistant, the SD505-APS ensures stable fire protection performance in demanding environments. Technical Specifications Condition New/Never Used Surplus Brand Silent Knight (Honeywell Farenhyt) Category Fire Safety Part Number SD505-APS Subcategory Addressable Smoke Detectors Series IntelliKnight SD505 Series Detector Type Addressable photoelectric smoke detector Operating Voltage 17–41 VDC Standby Current 0.55 mA Alarm Current 0.55 mA Sensitivity Range 0.88% – 3.56% obscuration/ft Operating Temperature 32°F to 120°F (0°C to 49°C) Relative Humidity Up to 85% non-condensing Air Velocity Tolerance 0–300 FPM Height (with base) 2 inches (low-profile) Base Compatibility SD505-6AB common base Construction Plastic housing, vandal-resistant locking Maintenance Field cleanable chamber; drift compensation Testing Calibration and sensitivity viewable via panel or remote Windows-based software Listings & Approvals UL Listed; NFPA 72 compliant Production Status Discontinued Weight Approx. 0.3 lbs Information About SD505-APS The SD505-APS is part of the Silent Knight IntelliKnight SD505 series of intelligent detectors, built for open-area smoke detection in commercial and institutional applications. Each detector has a unique digital address recognized by the FACP, simplifying identification and alarm response. Featuring a field-cleanable chamber, automatic drift compensation, and calibration test capability (local or remote via Windows-based software), the SD505-APS supports efficient maintenance and long service life. Its low-profile housing uses the SD505-6AB common base, ensuring compatibility across the series and flexibility in system design. Key Features: Addressable Device: Each detector has a unique address recognized by the FACP. Photoelectric Sensing: Provides accurate detection of smoldering fires and dense smoke. Contamination Compensation: Automatically adjusts for environmental conditions to reduce false alarms. Built-In Test Feature: Supports local and remote calibration testing for simplified maintenance. Low-Profile Design: Measures just 2 inches high with base for unobtrusive installation. Base Compatibility: Uses SD505-6AB base, shared with other IntelliKnight detectors. Robust Construction: RF/transient protection and vandal-resistant locking enhance reliability. The SD505-APS delivers the reliability and precision required for professional fire detection in IntelliKnight addressable systems.
Brand: Silent Knight · Category: Fire & Life Safety
Key features
- Addressable Device: Each detector has a unique address recognized by the FACP.
- Photoelectric Sensing: Provides accurate detection of smoldering fires and dense smoke.
- Contamination Compensation: Automatically adjusts for environmental conditions to reduce false alarms.
- Built-In Test Feature: Supports local and remote calibration testing for simplified maintenance.
- Low-Profile Design: Measures just 2 inches high with base for unobtrusive installation.
- Base Compatibility: Uses SD505-6AB base, shared with other IntelliKnight detectors.
- Robust Construction: RF/transient protection and vandal-resistant locking enhance reliability.
Specifications
| Manufacturer part number | SD505-APS |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Silent Knight (Honeywell Farenhyt) |
| Category | Fire Safety |
| Part Number | SD505-APS |
| Subcategory | Addressable Smoke Detectors |
| Series | IntelliKnight SD505 Series |
| Detector Type | Addressable photoelectric smoke detector |
| Operating Voltage | 17–41 VDC |
| Standby Current | 0.55 mA |
| Alarm Current | 0.55 mA |
| Sensitivity Range | 0.88% – 3.56% obscuration/ft |
| Operating Temperature | 32°F to 120°F (0°C to 49°C) |
| Relative Humidity | Up to 85% non-condensing |
| Air Velocity Tolerance | 0–300 FPM |
| Height (with base) | 2 inches (low-profile) |
| Base Compatibility | SD505-6AB common base |
| Construction | Plastic housing, vandal-resistant locking |
| Maintenance | Field cleanable chamber; drift compensation |
| Testing | Calibration and sensitivity viewable via panel or remote Windows-based software |
| Listings & Approvals | UL Listed; NFPA 72 compliant |
| Production Status | Discontinued |
| Weight | Approx. 0.3 lbs |
| Product type | Remote Booster Power Supplies |
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