| Brand | System Sensor |
|---|---|
| Type | Smoke Detectors |
| MPN | OSI-R-SS |
Check the listing for details. System Sensor OSI-R-SS Reflected Type Beam Smoke Detector 4-Wire New in Box. Condition: New. Listed at 716.99 USD. OSI-R-SS is a 4-wire conventional reflector-type linear optical beam smoke detector for use in fire alarm systems. The beam operates primarily on the principle of light obscuration using an infrared beam.
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