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Some electrical installations, at least in Europe, do not have "null" wired to the switch. Smart switches need both live and null to work.
by saberdancer 7y ago
Some electrical installations, at least in Europe, do not have "null" wired to the switch. Smart switches need both live and null to work.
- tlrobinson 7y agoLutron Caseta smart switches (and a few others) don't require neutral wires (I assume "null" is the same as "neutral")
- dirktheman 7y agoThere are several smart switches that don't require null wires, Xiami Aqara for instance, or Shelly.