What is a 2-in-1 smart switch?

Explanation

A 2-in-1 smart switch is designed to support both neutral and no-neutral installation. If a neutral wire is available in the switch box, the switch uses it for stable power. If neutral is not available, the switch can operate in no-neutral mode, usually with a capacitor installed at the light side. This makes the same model suitable for more homes, but the exact wiring diagram must still be followed.

Common mistakes

• Assuming 2-in-1 means no wiring rules
• forgetting the capacitor in no-neutral mode
• not checking load compatibility.

Troubleshooting / next steps

• Check whether you are installing in neutral mode or no-neutral mode. Follow the correct wiring diagram for that mode.

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Related articles

• Why do I need to consider whether a neutral wire is available?
• Can I install a smart switch without a neutral wire?
• How can I check if my switch box has a neutral wire?
• What is a neutral wire?
• Why do some homes not have a neutral wire at the switch?