On 30/11/2019 09:15, ARW wrote:
45% due to bad positioning, 20% no battery. So why did the rest fail?

https://www.bbc.co.uk/news/uk-england-50598387

How badly does it need to be positioned to cause it not to work?



Could it just be contamination of the sensor - being installed in a very
dusty or greasy atmosphere. I've seen ceiling mounted alarms that
almost have a fur covering where dust has stuck to a sticky geasy case.

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