Fire alarm

ID: ciro-santilli-s-hardware/house-2021/fire-alarm

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Fire alarm by Ciro Santilli 35 Updated 2025-03-25 +Created 1970-01-01
2021-08 bedroom battery out, 7.29V out of 9V duracell duralock. Buying pack of 12 Energizer nine-volt batteries. Measurement on new battery: 9.68V.
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