My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on.aztech101 t1_iyat9j0 wrote
Reply to comment by BoringCrow3742 in My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on. by Iain_MS
Digital thermostats are objectively better in the vast majority of cases though?
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