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).
Operation
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.
Features
• 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
Specifications
Operating Voltage: 24-41 VDC
Current Consumption:
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
SD505-6RB
SD505-6SB