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Optical Smoke Detector OSD64

Analogue addressable electrooptic Optical Smoke Detector OSD64 is designed to detect fires accompanied with low concentration smoke occurrence inside the space under monitoring in closed rooms of various buildings and structures as well as to transmit a “Fire” signal to receiving and control device R3500.


Power supply from DCL (28 – 36 V)
Detector sensitivity 0,05 to 0,20 dB/m
The detector remains functional when affected by air flow rate
background luminance of artificial or natural light sources
up to 10 m/s up to 12000 lx
LED flashing frequency in stand-by / “Fire” mode 0,2 Hz/2 Hz
Overall dimensions of the detector with power outlet, no more than Ø93×44 mm
Detector weight, power outlet including, no more than 120 g
Operating temperature range from -25 to +55°С
spec.des. from -40 to +70°С
Average service life, at least 10 years

The detector performs the following functions:

  • smoke concentration measurement;
  • measuring results processing using special algorithms and “Fire” signal transmission to receiving and control device;
  • indication of detector operation mode;
  • automatic dust compensation of  smoke chamber to exclude false alarms;
  • functioning test with a button or special optical tester OT-1.

Power supply and data exchange of the detector is performed via a two-wire DCL. The detector does not respond to humidity changes and to the presence of flame and natural or artificial light.

The detachable connection between the sensor and the socket provides easy installation, mounting, and maintenance of the detector.

Circular contacts allow easy mounting of the detector without orientation with respect to the socket.

To facilitate DCL shielded cables installation, cable mounting plate is provided on the power outlet (option).

It can be mounted on dropped ceiling using a special socket combined with mounting rings.