Supplied batteries are old.

Supplied batteries are old.

Flamingo FA20 / 4 smoke detector 4x Optical smoke detector / fire alarm / fire detectors tested to DIN EN 14604 (tool)
Buy at Amazon.com

Customer Review

From seven-mounted smoke detectors are after three months five empty.
The first smoke detector filed it after a month.
The batteries have a shelf life imprint of 6/14.
Which of course means that they are very old and no longer have the full power.
Amazon but proved accommodating and I got back a partial amount.

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