IntelliKnight SD505-PHOTO 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.
Addressable Photo Smoke Detector
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Model SD505-PHOTO Analog / Addressable
Photoelectric Type Smoke Detector 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).
The SD505-PHOTO units made up of an LED light source and a silicon
photo diode receiving element. In a normal standby condition, the
receiving element receives no light from the pulsing light source. In the
event or fire, smoke enters the detector and light is reflected from
the smoke particles to the receiving element.The light received is converted into
an electronic signal. Under normal conditions, the status LED blinks
approximately every 15 seconds,indicating that the head is
communicating with the loop. The LED lights continuously during the alarm period.
• 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
• Field cleanable
• UL listed, meets NFPA 72 Ch 7 requirements
• CSFM approved
• MEA approved
• FM Approved
Operating Voltage: 24-41 VDC
Standby: .55 mA
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
Compatible Bases: SD505-6AB
(Sold Separately) SD505-6IB
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