Carbon monoxide detector

[Bridgeman]

This carbon monoxide detector is fitted in headlining. I am unsure how to change battery. Anyone got same one?
Thanks.

 

[Seastoke]

This carbon monoxide detector is fitted in headlining. I am unsure how to change battery. Anyone got same one?
Thanks.

How old is the detector , they are only good for 10 years and I would think it has 12 v to it , is it the only one .

 

[Bridgeman]

How old is the detector , they are only good for 10 years and I would think it has 12 v to it , is it the only one .

Thanks.
Its only a year old came with boat. No manufacturer name on it. Press middle to check its working. I am a bit heavy handed so didn't want to start pulling it apart. Its only about 3 inch across and looks quite delicate construction. Princess F50

 

[Seastoke]

There must be others in , say bedrooms if you press them does all of them go off . Ps great boat sorry I can’t help , maybe contact prinny.

 

[Bridgeman]

There must be others in , say bedrooms if you press them does all of them go off . Ps great boat sorry I can’t help , maybe contact prinny.

Thanks.
Yes all good upto now.
Princess say “ battery operated test regularly”

 

[richardbrennan]

They do not all have replaceable batteries. I was advised to fit ones with replaceable batteries as apparently the non-replaceable do not do well in a marine environment.