Fit For 400V/220UF GTDK AVR7-1G Gasoline Generator Automatic Voltage Regulator Easy to install:Direct replacement of the alternator regulator , easy installation. Durable Construction - this part is made from quality materials to ensure reliable performance and long service life. Water-Resistant & Sturdy: Equipped with formal waterproof rating standards, this power unit repels dust and liquid intrusion to maintain dependable year-round. : Miniature and lightweight in structure, the transformer fits perfectly in place without complex tools or advanced operational skills., Manufacturer: AQYHSOTW