The Costar Model 12SIR carbon monoxide (CO) 12-VDC system detector from the Quantum Group Inc. is UL-listed and false-alarm-resistant. It has a low current draw, a six-year limited warranty, microprocessor control and alarm and trouble relays. It continuously self-tests every 10 minutes. It detects CO levels from 30 to 400 parts per million.

Quantum Group Inc.
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