Protechtor Series 2000 Carbon Monxide Detector

[Al]

I am trying to replace my Protechtor 2000 Series Carbon Monxide
Detector which has gone bad. It goes off all of the time and will not
cut off even with all windows / fans running for close to an hour. Its
got a 1997 date on it so I would guess that they go bad after some
time. Problem is I can't locate the exact replacement. It is made by
Atwood and I went to their site with no luck. They still sell the LP
Gas detector and I plan on replacing it too. Just want to make sure my
detectors function as they were intended to.

I have not called bluebird yet but plan too. Any more sources?

Al, Kathy, Alfred, Daniel Johnson
'96 BMC B50
Atmore, Al.