Description

The Silent Knight SD505-APS Addressable Photoelectric Smoke Detector is engineered for commercial fire detection where smoldering fires pose a high risk. It uses advanced photoelectric sensing technology to detect visible smoke particles often generated by slow-burning fires involving materials like foam, fabric, and plastic. Designed for use with IntelliKnight fire alarm control panels, each detector has a unique address for precise alarm location identification—saving precious seconds in an emergency.

With its low-profile 2″ design, the SD505-APS blends seamlessly into modern interiors. It features automatic compensation for sensor contamination, remote calibration testing, and a built-in fire test function—making maintenance both efficient and reliable. The common SD505-6AB base simplifies installation and future upgrades.

Perfect for office buildings, schools, hospitals, and other critical facilities, the SD505-APS delivers proven performance, UL, FM, CSFM, and MEA approvals, and added tamper-resistance for long-term durability and compliance.

Key Features:

• Photoelectric smoke sensing – ideal for detecting smoldering fires
• Addressable design – each unit has a unique ID for pinpoint location
• Compatible with IntelliKnight fire panels
• 2-inch low-profile design – discreet and aesthetic
• No mechanical switches – simplifies addressing
• Automatic contamination compensation – improves reliability over time
• Remote testing and calibration via control panel or software
• Built-in fire test feature
• Field cleanable sensor for long service life
• Tamper-resistant locking mechanism
• UL listed, NFPA 72 Chapter 7 compliant
• FM, CSFM, and MEA approved for broad compliance