On 02/08/2018 08:18, Harry Bloomfield wrote:

only the none mains version uses a PP3. Mains version uses a none
replaceable lithium. Admit defeat, put it all back and decide to ring
supplier, because it suggests it has a 10 year guarantee.

in most cases the alarm itself is supposed to be replaced after 10
years, so if they can make the lithium cell last that long, there is not
much point in making it replaceable - it might only encourage people to
carry on using an alarm that has lost sensitivity.


--
Cheers,

John.

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