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From:  David Jones

Ok, I bought the AIM CO detctor.  It is compact, but a bit heavier and larger than I imagined--but entirely satisfactory for my plane and hangar.  It does have a chirp that I can hear with my degraded hearing frequency.  Looking at it, I saw no screws in the base plate.  Being naturally curious, particularly about replacing batteries in other safety detectors, I looked into the Owner's Manual.

Conspicuously absent is information about replacing batteries, in fact, it appears that they want you to throw the $50 instrument away when the test button shows the wrong response!

Me throw fifty bucks away when a two buck battery gets low?  Wrong!

Unfortunately, they give no idea of battery lifetime on this fine instrument--should I expect it to last six months or six years before I throw it away and give them another fifty bucks instead of buying a two buck battery?

Did I remember someone-maybe Scott-saying that he hard-wired it in his airplane?  If someone has pried the back plate off successfully, please give us your observations regarding future battery replacement, potential hard-wiring, etc.

The bottom line is that it is a worthwhile investment, and even with no battery info, I am happy with the suggestion of buying it!  Thanks guys.

David Jones, Pecatonica, Illinois

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