Leviton 6674 Dimmer Switch in Black — UL Listed for US Residential Electrical Code Compliance, Drop-in NEC-Standard Wiring

Leviton 6674 is a dimmer switch finished in Black, a US residential electrical device manufactured by Leviton — the largest privately-held US electrical-device manufacturer (founded 1906, headquartered in Melville, New York). This dimmer controls light intensity by varying the AC waveform supplied to the load. The device is rated for the bulb types listed on the product label — verify compatibility with LED, CFL, or incandescent bulb types and the wattage maximum printed on the device before installation. Standard single-pole and 3-way wiring configurations are supported with the included Leviton wiring diagram. The 6674 device is UL Listed — independently safety-tested to applicable US electrical-equipment standards — and is covered by the Leviton manufacturer's warranty terms as published on the product label. Part of the broader Leviton residential / commercial / industrial product family, designed to coordinate with Leviton switches, dimmers, receptacles, wallplates, and combination devices across matching color and form-factor lines.