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. The SD505-PHOTO is particularly suited to detecting dense smoke typical of fires involving materials such as soft furnishings, plastic, foam or other similar materials which tend to smolder and produce large visible particles. The detector features automatic compensation for contamination and a simple detector calibration test procedure that can be run from the panel or remotely (using the WindowsTM based downloading software). • 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 a WindowsTM based computer software. • Vandal-resistance locking features • Field cleanable • UL listed, meets NFPA 72 Ch 7 requirements • CSFM approved • MEA approved • FM Approved

Specifications Operating Voltage: 24-41 VDC Current Consumption Standby: .55 mA Current Consumption Alarm: .55 mA Ambient Temperature: 32ºF to 120ºF (0ºC to 49ºC) Mounting: 4” Square, 4” OCT, Single gang mud ring Relative Humidity: 85% noncondensing Air Velocity: 0 - 300 FPM