Tested Most Reliable by Lawrence Berkeley National Laboratory (LBNL).*
(click to download summary paper of these results);
LBNL Report LBNL-40556 (click to download entire report)*
Quantum Group Inc. manufactures all its carbon monoxide sensors in San Diego, CA.
BIOLOGIX Residential Carbon Monoxide Alarm Model B2011
Regular price: $55.00
You only need one COSTAR® CO alarm in the garage. The CO alarm may be placed near the center of the garage.