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This is a pack of 5Pcs F3AA series 4PIN power relays, including F3AA005E (5V), F3AA012E (12V), F3AA024E (24V) specifications. Adopting premium coil and high-precision contact material, it features stable pull-in, low heating and excellent anti-interference performance. The 4-pin normally open structure meets most circuit switching requirements, with compact size and standardized pin layout for convenient direct replacement and welding. Widely applied in household electrical equipment, intelligent control modules, industrial automation boards and electronic DIY project transformation.