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Do you have a question about the CO1210 and is the answer not in the manual?

Questions and answers

Danielle Truscott
March 12, 2025

After test 66 is displayed

1 comments:
Mr. Anderson
March 12, 2025

The test result "66" on the First Alert CO1210 appears to indicate a temperature reading. The manual states that the temperature is always displayed on the screen when the detector is receiving battery power.

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