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It's an automatic switch that opens when the line voltage drops below four volts
To make an alarm decision
• Very Early Warning Fire Detection capability
The Silent Knight SK-PHOTO-W Intelligent Photoelectric Smoke Detector delivers reliable detection
Notifier’s FS-OSI-RI intelligent addressable reflector-type linear optical beam smoke detector is uniquely suited for protecting large open areas with high ceilings
VESDA XCL-XRL-SC-CO Replacement Carbon Monoxide Sensor S1209 (917-0059-002) It's an automatic switch thatThe Vesda XCL XRL SC CO is a Replacement Carbon Monoxide Sensor that can detect up to 300 parts per million (ppm) It is part of the Vesda Xtralis range. The Vesda Sensepoint XCL provides early warning of the presence of gases. It can protect against fire threats while monitoring systems and protecting occupants. The Vesda Sensepoint XCL can support a wide range of gases, including: Carbon monoxide (CO, ppm) Flammable gases (% LEL) Oxygen (O2, % v v)