[treeman79]

Get one that shows actual value.

We had one a new one that just beeps when high. Except it didn’t. Delayed medical treatment for months since it never went off.

Gas company guy showed us how high levels in house was and the alarm was silent. Even with fresh batteries.

[JonChesterfield]

Example? Surprisingly difficult thing to search for and seems an unwise thing to pick off amazon.

[treeman79]

Well kiddie brand is the one that failed to go off. So not them.