Advanced Lutron smart dimmers and multi-location systems—such as the Lutron Caséta PRO smart dimmer (P-PKG1W-WH or PD-5NE), certain multi-location companion switches, and specific commercial-grade architectural dimming panels—frequently require or accommodate a neutral wire connection. Unlike standard two-wire Caséta dimmers that rely on leakage current, these neutral-required models utilize the permanent neutral conductor to power complex internal microchips, stabilize phase-adaptive dimming for challenging LED loads, and support higher total wattage capacities. Verification: Inspect the wiring requirements listed on the specific product box or installation guide to confirm whether your chosen Lutron model requires a neutral connection.
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