Optical smoke detector Model OP921
Photoelectric smoke detector (Model OP921)
⭐using state-of-the-art microcontroller circuitry and surface mount technology for maximum reliability, Model OP921 incorporates an optical sensor using the light scattering detection principle . The instrument uses advanced software algorithms to analyze the signals and provides highly stable and accurate smoke detection, Model OP921 also uses state-of-the-art microprocessor circuitry with error checking; self-diagnostic detectors, and monitoring programs. Place your order today and if you have any questions regarding this or any other safety product
Specifications
| Working temperature | +32°F (0°C) to 120°F (49°C) |
| Humidity | 0─ 95% |
| Gas pressure | No effect |
| Air Velocity | 0 ─4,000 ft. / min (0-20m / sec) |
| Input voltage | 16VDC − 30VDC |
| Alarm | 280μA |
| Standby Current (max.) | 280μA, max. (average) |
| Maximum distance | 30-foot centers (900 sq. ft.), per NFPA 72 |
| Weight | 0.32 lbs.(0.144 kg.) |
Stanard : UL Listed / ULC Listed [with STI Guard Model STI-9604]
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