I just got a Nighthawk COPP3 (plug in w/ battery) from Home Depot a few weeks ago. They had a deal with the CO detector and a smoke alarm in the same bubble pack for 30 bucks which was a good deal considering the detector alone sold for 40.
At any rate, Jake's advice is spot on according to my manual. I actually had mine detect 34ppm of CO the other night after emptying a large bucket of hot coals which was only in the house for the few moments between filling it up and emptying it outside.
My detector is around 20 feet away from any CO source and is about 1.5 feet off of the floor. I was glad to see the reading so I know its working.
http://www.amazon.com/Kidde-KN-COPP...N86A/ref=sr_1_2?ie=UTF8&qid=1296774832&sr=8-2
At any rate, Jake's advice is spot on according to my manual. I actually had mine detect 34ppm of CO the other night after emptying a large bucket of hot coals which was only in the house for the few moments between filling it up and emptying it outside.
My detector is around 20 feet away from any CO source and is about 1.5 feet off of the floor. I was glad to see the reading so I know its working.
http://www.amazon.com/Kidde-KN-COPP...N86A/ref=sr_1_2?ie=UTF8&qid=1296774832&sr=8-2