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rln's profile

5 Messages

Saturday, January 28th, 2023 6:08 PM

Auxiliary Siren: Low temperature operating limit?

What is the low temperature operating limit for the 105db auxiliary siren?

Winter temperatures here commonly dip to 20F or 10F or even 0F for days on end.

Advocate

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923 Messages

1 year ago

I have the extra siren outside and we had a night during Christmas where it got down to 16 degrees and it still was working, now when it gets that cold for a period of time it may drain the batteries faster but it will still work

Community Admin

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2.4K Messages

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10 Points

1 year ago

Hi @rln, 

The operating temperature of the Auxiliary Siren is 32-102F. However, as Lance mentioned, it can still work in lower temperatures. 

5 Messages

1 year ago

@emily_s , @lance843 

Thanks for both your responses.

I am curious whether the stated operating temperature limits mostly hinge on the effect of extreme temperatures on the batteries or some other component of the siren itself?

From what I've read online, lithium iron disulfide AA batteries, e.g., Energizer Ultimate Lithium Ion, will tolerate cold temperatures much better than the alkaline AA batteries.

https://data.energizer.com/pdfs/temperat.pdf

https://www.outdoorintensity.com/best-aa-batteries/

https://modernsurvivalblog.com/alternative-energy/2-reasons-why-lithium-aa-batteries-are-better-than-alkaline/

https://ownthewinter.com/best-cold-weather-aa-batteries/

Community Admin

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2.4K Messages

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10 Points

@rln​,

Lithium-ion batteries do perform better than alkaline batteries in colder weather. Since your original post mentions that temperatures drop in the 20-0 degree range in the winter, swapping out the alkaline batteries for a lithium-ion option should keep it charged!

Advocate

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923 Messages

@rln​ I haven't put any lithium batteries in the extra siren as so far I am getting about 2 years of life with he regular batteries in it but it does not get that cold often here and when it does it doesn't stay long, for instance it was 20 degrees last week, it is around 70 now lol

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