Fit For SX440 AVR Brushless Generator 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. Waterproof & Tough Performance: Built to a standard waterproof rating, this power module effectively resists dust and water ingress, granting outstanding longevity and steady functionality under different working conditions. User-Friendly Fitting: With a condensed, lightweight streamlined structure, the transformer module enables straightforward installation with few tools and little technical experience needed., Manufacturer: HYDBCNP