No real way around it as far as I know.
I’m lucky in that my 15 year old alarm is still working properly. I’ve got a working spare with the battery removed for when it’s needed.
My advise if replacing with a used unit is (assuming it works), pull the battery out and fit a fly lead to the siren and mount the battery under the bonnet. Prevents any future leakage damaging anything.
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2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles
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