Yes, all Leviton switches—both standard mechanical models and smart electronic variants—must be properly grounded to ensure safe operation and comply with National Electrical Code regulations. The green grounding screw on the switch yoke must be securely connected to the bare copper or green insulated ground wires inside the electrical junction box. Grounding provides a safe, low-resistance path for fault currents to earth, tripping the circuit breaker instantly if an internal short circuit occurs and protecting users from lethal electric shock. Verification: Test continuity between the switch ground screw and the metal junction box using a digital multimeter to confirm a secure electrical bond.
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