Source: cirosantilli/ciro-santilli-s-hardware/house-2021/fire-alarm
= Fire alarm
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.
= Fire alarm
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.